Stearman?.... good show old man! You are a lucky dog indeed! People look at a Stearman and see an old biplane. I see a Stearman and I see the height of refinement in biplane aviation. It is an excellent performer without being nasty in any way. Having exposer to such a fine aircraft can lead you to a dangerous conclusion that you are stick and old, military plane ready and as you found out, and I'm very glad you were able to save the aircraft... as I was reading, I was yelling to myself, "Let off a bit on that throttle, but not too much now!" Down to about 65% throttle in a smooth action would have done the trick and you would have been telling us about how you crashed it when landing instead of a tale of taxying hell! Of course, anybody who's been unfortunate enough to have a plane rolling sideways down the runway on them (that's me man!) can tell you it is easier said than done. Fear can easily ovetake you and the proof here is that you did NOT let that happen, so with that in my mind, the experience makes you a better pilot than the average bear.
Now, I think I know where you started to go wrong here, and if you are willing to read on, I may, and I repeat may be able to tell you where you went wrong to the point where you will be able to go up to just about any plane, get in it and operate it safely.
The first mistake was that of the person who let you fly the plane in the first place. Saying "be careful" is kinda one of those "no shirt" type statements. Ok, be careful about what? How does this plane deviate from the standard model? For those of you who do not understand the term, the "standard model" flies something like a small Piper plane like an old Cherokee Archer II I used to fly quite a bit and hated every minute of its sluggish, but very mild qualities. Flying a Piper Cherokee Archer II offers few if any surprises regardless of what you do to it. Of course, if you manage to bend a Pipe Cherokee Archer II out of shape enough in a flight pattern, it reaches a point of no return, but has a madenning nautral ability to stay in level flight regardless of how sadly you operate the controls.
The second mistake was on your part. You didn't say something like, "Ok, be careful of what?" I approach an aircraft I've never flown before in a state of pure psychotic paranoia. I literally get out my magnifying glass and look up the pito tubes to see if they are clogged. I pull gasoline samples out of all tanks and spin them in my hand held centrifuge. Why am I the only pilot who owns a hand held centrifuge? Yes, the gas is certified by the FAA, but the guy who certified the tank of supply isn't there right now and condensation and time takes its toll and what about the last laod of fuel? I can't tell you how much FBO's learned to hate me for discovering bad loads of fuel and it happens every day. Contrary to popular belief, you are NOT insulting the owner of the plane by doing this, you are actually paying him or her the compliment of being careful and never, and I mean never apologize for that!
Here's some more tips on flying old, and or high hour crates in general, and specifically military built aircraft...
First, try and think of the military plane in its historic context. No matter what it is, you can generally count on some compromizes being made to enhance performance. As we've all found out playing this game, a few more KPH or a slightly better turn ratio or roll rate is all the difference between the great planes and the dogs of a given years production run. Military aircraft are designed so they can tool up a plant in a hurry to produce them. As a result of these factors and more, the military plane that confronts you usually has these characteristics in common...
1) Smaller control surfaces. This is especially true of the rudder. The smaller the surfaces, the faster you can fly and generally, anything larger than what you find on a military plane is just there to make its low speed characteristics easier to handle. Torque from the engine and one wing wanting to lift before the other leads to a certain pucker factor on takeoffs and landings that you simply will not even consider are acting on the plane (and it acts on all planes, just some compensate better than others) and as a result, you can go away at best... surprised!
2) Large and not so smooth engines as they push the technology of the day to produce as much horsepower as possible out of a given powerplant. Can we say?... How about a little vibration Scarecrow! This is so bad that a common drill with military pilots is to go start the plane, run it up and shut it off, then go someplace, usually next to the plane and pee! Your instruments will vibrate at times so hard you simply cannot read them exactly. Next time you are at an aviation show and you see the P-47 rolling down the runway, chances are, the pilot will let off on the throttle just before lifting off. He's/she's doing this to check the airspeed because the lousy dash is vibrating so hard under full power that it's truly like Grandpa's blurry slide show of his Hawaii vacation!
Then, depending on the military plane, the powerplant will either be warped towards having the largest and most powerful powerplant possible for performance or the smallest for endurance. Most general and commercial aviation pilots are better equipped to deal with the low power end of the equation. You may think it more of a challenge to deal with the low powered engines and yes, you do have to think ahead and you can't power your way out of every problem. However, even if the plane has the power, due to the lack of control surfaces at low speed, you may not be able to use it and all that heavy engine torquing the airframe around becomes an extreme liability.
3) Lack of dihedral angle. Lack of WTF?...
http://142.26.194.131/aerodynamics1/Sta ... hedral.htm
Military planes generally have very little wing angle in this respect except for some true manuvering dogs like the P-40 and Beaufighter in its tail assembly and yes, the dihedral angle back there affects things as well, especially on takeoffs and landings. A big reason why it is a manuvering dog is because it has a good amount of dihredral angle to the wing. On most military planes, you have to actively fly them all the time due to a relatively flat dihedral angle. And this fact brings up a point that's rather a pet peeve of mine. Over at Uber forums and just about everywhere else, the history/technology of the day buffs have never given enough credit to how automatic pilots made long range flight even possible. Think you can muscle a P-51 around in real life for 8-12 hours without an automatic pilot to give you a break? Well, then you are a much better pilot than me Gunga Din! The lack of dihedral angle comes into play at low speeds and takeoffs and landings due to one wing wanting to fly a moment before the other one. Combine this with the other factors discussed and yes, a flat dhihedral angle gives you a fun, but actively managed at all times flight!
My 800 hours in a Vietnam era tail modified P-51 and yes, don't give me a bunch of crap about it, there were P-51's used in the early days, mostly by our friends at Air America and Bahamas Air, my 400 hours in an Avenger, both modified and adapted with different cams, props and STOL kits for agricultural aviation gave me a chance to experience somewhat what a military plane of WWII was like. I also have 0.5 hours in a P-47... I think it was a M model? Did they make an M?... and with that plane, it has like 3 stages of supercharger that while you may think it is vaccum actuated, it is in fact, or at least on this one, vaccum actuated at the cockpit end, but at the engine side of life, it was pure mechanical screw. Knowing how the cluchtes engage will help you. Most modern ones are just like the clutch on the air conditioner for your car. It is an electrical switch running a magnetic clutch. Some were actually hydrolic. Some were simply mechanical spring and plate asemblies. The bottom line is that any plane you approach that you've never flown and I could care less if it's the same model as the last one, in my opinion, is not properly looked at if you don't come away dirty and smelling of avgas at the least.
On all planes, don't just try the control surfaces. Have someone pull and push on them. The hinges can have wear that will only make the control bind just when you need it to save the plane and possibly, your life.