working on my buddies 81 k20, has 465/208. we droped his motor in it (pain in the ASS) and hooked it all up, i adjusted the clutch best i could figure, and while he was pushing the clutch the cab was moving. it really moves when the pressure plate bottoms out. check the cab mounts, all good. the only thing i can think of is the fenders arn't on so it alows it to move. /forums/images/graemlins/dunno.gif also what is freeplay spec and where do i measure at?