[flipper35]

The relief is in the t-stat housing, and when I put it on I made sure the t-stat was centered and in the relief before I tightened it down. Funny thing, this had been fine for years before the original let loose. I am going to use silicon with the same size gasket. Should solve the problem. I am going to check the surfaces with a small straight edge while it is apart too.

Thanks guys.