hello, i'm doing a top-end rebuild (1st time for me on a 4stroke motor) on my '03 yz450f. i've got the piston at TDC and the camchain tensioner is out of the engine. my question is, the camchain barely fits over both cams.. how do you guys line up/install the cams when rebuilding? the yamaha manual says to do the exh cam first, but it's pretty difficult either way.. is there some trick you guys use? or is it just 'fiddle with it till ya get it in' (no wisecracks please, i see the door wide open on that one )? thanks in advance.