yea yea...thats where i got electrocuted one leg of
480 volts there on my finger..
YES IT HURT !!!!!!
ANYWAY...i lapped all the valves as i removed them. i like things perfect. they were machined.. but not lapped.
this is where you use valve lapping compound and the suction cup tool and spin the valve in the head in between your hands back and forth to mate the surfaces of the valve and head seat..if you see any imperfections across either surface you need to have the valve and seat machined if lapping won't do it...