I got a 2005 zx636 2 months ago and have gotten it running but then have been trying to eliminate the bad sounding cam chain noise. It had a manual tensioner when i got it so went to a good auto tensioner, then brought another not messed up manual tensioner and couldnt get rid of the noise there. After that i found out the previous person working on it had destroyed the cam chain guide on the tensioner side so i replaced that with a good one and the noise went away a little but is still there and any of the tensioners are almost maxed out to get tension on it. The bike supposedly has only 6198 miles but looks like someone went to replace cam shaft chain before and cut the guard to keep it on crankshaft sprocket and they may have previously split the case cause of the gasket maker. So what im trying to ask is does it sound like a bad chain?