We'll I cant be 100% sure that it would be ok, I noticed daylight through mine when I sat the head on the block with no gasket, and I can promise you that mine would have had problems, because theres no way it could have compressed the gasket around the #1 cylinder. Are you getting water and oil mixed after a rebuild, and did you notice any kind of step between the two surfaces?

89 yota pickup
22RE 261C cam
Tanny / engine rebuilt after 256K
Head machined to RV street spec(EB's)