About 3 years ago, I bought a beatup dirtybirdy for almost nothing, sanded, covered, flew it with an OS61SF and just got hooked to that plane. Had alot of stick time on that plane. Crashed it a few times, but kept on rebuilding it all the time and after every repair, it still would fly OK. On Final repair, it got so bad and oily, that even covering will not stick to the plane. CA'd the oily parts and then covered it. Still kept on flying great, finally the tail got alot weak with all the oil and started getting flutter. Recently bought a UFO at a swap meet and got that flying, it flies beautiful also. Since 1998 have flown about 30 different types of planes, but still the best is Dirty Birdie 60.