The pLane is impossibly unstable in yaw axis. At 200 mph it's possible to get the p51 to yaw back forth at an unbelievable angle with it taking quite a while to settle back down. That is serious instability. I think if an airplane could yaw that far at high speeds it would tear itself apart. I have mainly flown a piper cherokee for my nearly 600 hrs. as a private pilot so i don't really know how a p51 flies, but I believe it would have more stability than cherokee 140 especially at high speeds. That said, the p51 is a lot of fun to fly, although I would never get into it in real life.