hey guys i had the twister and had the really bad flutter on my first flight and it crushed the rear end of the fuse above and below the horizontal stab i called modeltech and they gave me a complete new kit all i had to do was send in the fuse, i got to keep everything else. so if you guys have any problems call the customer service and talk to them i got the new kit and put stabilizer wires on the back end and it seems like it is alot better, i have a saito 72 and the thins flys awesome plane will 3d like no other and has no bad flight problems, except for my dumb thumb from time to time. hahaha.......