This one flew great but it was a beast on the ground....It was very hard to get it to go straight. A club member bought it and he did many things to get it to track straight. (Not sure what all he had to do)

Thanks - Yes, I was surprised at how nimble it is....Nothing like any typical trainer I have ever flown. On the 4s system, it has a great amount of power too...….

I never did get this one figured out. Another club member thought he could work through it, so I sold it to him pretty cheap (like $125 I think?) He said later on he had figured it out, but he said he crashed it soon after. - He never said what he did to fix it, other than "tweaking" the tail wheel. (Which I tried adjusting several times myself, with no significant impact.) Looking back on it, I'm wondering if the thrust line may have been way off when the builder mounted the motor? (Not sure if that could be it or not, since it flew well after it was trimmed out)

I fly mine on a 4s 2200 I have flown it on a 3s before, but it feels pretty under-powered with it. (with the 4s, I could leave it at around 1/2 throttle, with the 3s, it wanted 3/4 or more to maintain flight. I use about 30% expo on all controls in low rate, and 40% in high rates. Mine is very difficult to handle on the ground (I have not got that part resolved yet) It is a very aerobatic plane though...lots of fun to fly. Let me know how you like yours (and if you shoot any video of it)