a lot of guys have them and like them at our club but most had to rework something to get good aileron throw, i think servo horn hits side of fuse or something. also check out your fuel tank to make sure it is in good condition yourself. ive seen really bad arf fuel tanks- crimped tubes, leaks, u name it. better safe than sorry. H9 is great overall though. Ive personally had their 80"cub, 60 size superstick, 1/4 and 1/3 scale caps. If money grew on trees i'd love the new taylor craft. trade in the 80"cub for the 100" . They just keep getting better it looks like to me. I think the advance fourty is a little hard to tell top to bottom is its only downfall .