I can't get the lid off the basket in front of the pump. I've tried to turn it manually, tried a long screwdriver through the handle for more leverage and tried inserting a flat screwdriver between the lid and the basket to see if it had created a "seal" I need to break. I've had magic lube on it during the season. It has probably been 4-5 weeks since I've had it open. It is so tight that when I try to turn it, the lid and basket move together and start to put pressure on the inward pipe.

Any suggestions? Thanks
Charlie