I'm installing new rings in my 03 800, i measured the old base gasket and i'm installing one of the same thickness. the service manual calls for loctite 518 to seal the base gasket which is a paste gasket sealant. do i need this stuff ?? also the ring end gap on the new rings is .016 (which is the spec min) on one cylinder, but the other cylinder is .014. do you just file off some of the ring end ???