Thanks. I had done a top end bore and piston replacement last year. The sled ran perfect but shortly overheated. I had apparently not purged the coolant system enough. I later tried to purge the system again but this time I had anti freeze going into one cylinder. I never thought to recheck the torque and took the head off to inspect the piston/cylinder. The gasket appeared to have a tiny damaged area on the metal ring for the cylinder that was blowing anti freeze.
As far as I can see there is no damage to the head, jugs or pistons. The surface areas are flat.
I will install the new gasket dry as recommended. purge, purge and more purge. This time I will re-check torque following the first couple runs.