Info you need to know: 20" 07 Gu frame King hub snail cams KMC kool chain Basically my back wheel keeps moving. so, i get the chain tension right, then attempt to tighten up the wheel, as i spin the bolt the hub itself moves and then mucks up the chain tension and the wheel alignment. When i finally get the tension and wheel alignment right, and after i've had to re- adjust the brakes, everything is all tight and set up mint. Then when i put pressure on it the wheel moves, the chain goes loose and the brake rubs against the rim. Tried doing it different ways and with different snail cams, still does exactley the same. Need ideas how to fix it, don't really want to spend loads of money just fixing a simple problem. Any ideas??? Thanks, Liam.