My pool light fixture is surrounded by a plastic (Hayward, I believe) face plate attached to the wall of my vinyl pool with 10 screws. I need to remove this face plate to take out the broken off rusted screw that sits at the 6 o’clock position and replace with a new screw. Can I remove this face plate, which is under water, or do I have to drain the pool. My concern is the holes from the removed screws and leakage, etc.