something doesn't add up 🙁
you cannot skim a head with the valves in place, the valve stem oil seals are a push fit and each take just seconds to remove and replace :roll:
if you had a complete running engine, you could remove the head, strip the valves, replace the seals and put it all back together in well under 8 hours
so 10 hours to replace the seals with the head already off.........................
