So I’ve got my 2000 grizzly 600, new chain and tensioner , valves lapped, new springs on all the ,valves checked the timing and have re done the timing even though positive it was good and valve clearance like 3 times now and I have one exhaust valve opening up right as the intake valves close just for a split second and not all the way maybe a quarter of the way open and besides something being wrong with the cam shaft I’m dumbfounded any idea would be great !!
