Thanks a bunch Pilot77. The belt in the boom was not coming off, but just thought maybe it was too loose because I just now read my instructions on putting the tail boom on and they said to pull the boom out a little bit to tighten the belt after putting it on and I didn't do that. I just put the boom on and screwed it in. Ok I will try that. I just have the main rotors loose enough so that they can center themselves as the spin fast, then I will tighten them after centering. I saw different places that that centers the blades if you have them loose enough that they will move by the force of the spin, but no so loose that they flop around. But I will try these things and let you guys know how it goes. Otherwise I am still hover training. It is coming along very slowly, but it is coming. I can feel it!