WELL HECK, I woke up this morning & I had bubbles being pumped into the pool. Water level had fallen overnight. Thankfully, it hadn't gone far enough to have NO water going thru it. Filter was losing water thru the backwash port. I had had several instances where this wanted to happen but turning the handle again & resetting it into filter position & it stopped. I had thought it had stopped last night, apparently I was wrong. I ordered a new spider gasket this AM, it should be here Friday. Is there anything else I should look at as a cause of this? Anything I should be super conscious of in replacing the spider gasket? Any special sealants or anything I will need?