ok, so i have my engine mounted but it is not fitting properly, the engine moves side to side slightly and the main clamp will not tighten any further than it is, the other clamp wont fit over the tube on my bike, and the chain keeps falling off, I had someone who is more exp. with engines put the engine on my bike, its a nitro xt 20 inch frame, maybe i need a new bike? idk i thought this would be solved but no. im back to the same problem i had with the old bike the motor was on.....idk what to do, Im going to take everything off and start new again with the help of you guys, guide me to A WORKING bike. 
