I have a Pentair Dynamo pump. I removed the glass lid to clean out the strainer. Now I can' get it back on. It has to be rotated so that it fits into two groves. The problem is that the lid isn't flat enough for both sides to fit into the groves. I thought turning on the pump would suck the lid flat on so I could turn it but that didn't work. Can I hammer it in?
Very frustrating. It looks like it should be easy but it Isn't!
Any hints would be much appreciated.
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