Replaced spider gasket but still having problems. When I went to backwash put in back in filter and water is still coming out as if it was in backwash trickling out the pipe. Had this problem before with water also coming out the top where you turn to the settings. Always turn pump off before moving. Water was leaking out the top but replaced the spider gasket and that seemed to help but every time I backwash a new issue. Can the gasket move or not be lined up right? Sorry if this doesn't make any sense. Help