Reason I ask is I have my engine on the stand. Has oem head gaskets,jwt500 cams built engine. When I rotate the crank with belt on and tensioner set but no crank pulley after a few revaluations by hand the belt starts walking. I have been told from many that it should track straight without the crank pulley and washer. One person even told me that it might be the v lower gasket everything has under 500 miles on it. Thanks Rob