I also run SCE non-water gaskets on my SBC but I circulate water only thru the heads, Plugged the holes in the heads, O-ringed the heads, receivers in the block, Copper coat, silicone the corners. The other thing I do is when I go thru my engine (3 year intrevals) I always use a new set. The time it takes to clean the old ones, and to re-aneal, clean again is not worth it when you consider how long it takes to put the engine together (17 HS per side) and have a sealing issue. Big Show Racers do it because the motors come apart every round and they can afford it. Makes you wonder when they torch a head gasket out on a run if that would happened if that was a brand new head gasket??