So the light had water when we bought the house. After the slam and cleaning behind it, I had my wife grab a new gasket while I disassembled. Replaced the gasket and put it back. Worked great for a week or so and then I noticed it had water again. I took it out and reassembled again thinking some kid hit it when they were all over it the day before. Installed and seemed fine for another day. That next morning I turned on the light and noticed within about 10 minutes there were air bubbles coming out (probably when it heated up?).
Should I be using pool lube on the inside of the gasket? Am I missing something else? Unit looks solid. No rust/holes/etc I can see.