I installed my new wide mouth skimmer box in my above ground pool. I included the gaskets on both sides and tightened all the screws. I have a very tiny drip in the bottom left corner that is driving me crazy. When i installed it, I started with the top first, since that was the part above the water line and then tightened the bottom. Should I have done the bottom first? I don't want to keep cranking the screws and crack it.