Head Sealing issues
cumminsx,
I went with the fire rings, 2 years ago.
I haven't looked back-------
I did the start at 90 lbs, then 5 Lbs. @ hour till I got to 135 on the stands & 150 on the rest.
It takes a while but its worth it in the long run.
I read that Garmon does it with the head bolts a similar way.
Good luck,
WAYNES WORLD