Hello all, you guys got a good site here. I have a 2004 450es foreman 2500 miles on it, cam chain tensioner spring broke, jumped time,valves ok. Has anyone ever tried jumping chain back to proper position? Does anyone currently have a running 450 with the top end off, wouldn't really need top end off just valve cover off, that can measure piston position vs push rod height? That front engine cover can kiss my you know what.