So my bike very heated and blown the top end. So I stripped it down disconnected the power valve etc and now i have fixed it all the power valve servo pulls 1 way when I turn the key and will not return like it did before anyone any ideas?
Yes, if the engine hasn't been run, then the servo will only sweep one way. Then when the engines running, the powervalve moves. Then if you turn the engine on and off, it'll do the full cycle again.