recently got 2002 wr426, it had a wasted main bearings, crankshaft, and cams were loose in head. changed everething but now it seems to waste another head with cams and new cam chain. oil pump is within specs, and oil is coming to the head. cam caps are torqued properly. what to look for? It seems to me that at some point when i push it hard oil level seems to drop in oil tank and raise in crankcase causing clutch not to work properly.