Thanks Tejas. Appreciate your input.
I pulled the powerhead Sunday. The fitting that the copper cooling water pipe fit into was loose and the gasket was 70% missing. Screws were loose. I fixed all that, used some good gasket sealant on the new gasket and Loctite on the screws. Working good...
I've replaced my water pump twice and engine is still overheating. I get tons of smoke/steam out of the pee hole and when I shut down the engine it puffs out a huge cloud of steam/smoke. See photo. I suspect the exhaust plate gasket is damaged right where the copper tube slips into it's home...