Wondering if anyone on this forum ownes/owned a GPz 750 aircooled (ZX750/KZ750) which had starting issues, namely it sounds like the starter clutch isnt throwing in properly, it grabs for half a second and then makes that horrible scraping scratching sound a starter makes when it doesnt want to throw in... We pulled the motor apart after it started happening and noticed the cam chain spring was damaged (squished) to a certain extent, does incorrect tension stop this starter/clutch from throwing in properly? Unfortunately I have to wait 4 weeks for the genuine Kawasaki one to get here from Japan (they cant post a $3 spring in airmail even if I pay the bastards!)... I put a spring in there which sort of matches but still no avail, and we also pulled out the starter clutch, it spins freely on the secondary shaft one way and locks in and grabs the other, this is by hand pressure tho, is there a proper way of testing it with force? I'm pretty sure the starter is ok, we've pulled that out and tested it on a the bench and it happily ground up a plank of wood under power... any ideas? cheers!