Thanks guys. Yes, there is a rubber ring gasket, and it was finicky, not wanting to stay in place on top of the canister or inside the lid. Remember, my initial problem was a leaking from the center of the lid. Maybe I didn't get the copper washer back in place. I didn't even notice one, so that may be it. It's probably cool enough now that I'll open her up and take a look. I'll keep you posted.
Hotrod, very good point about no check valve in the inlet line, so there wouldn't be pressure with the engine not running, and oil would just flow back into the inlet, if I had given it enough time. Could you please elaborate on the 1/16" flow control hole that can get plugged. I don't get what you're referring to. The inlet and outlet hoses are flexible braided and maybe 3/8" O.D. The line that goes to the pressure gauge looks to be 1/8" O.D. and could be 1/16" I.D.
