I recently had to change the sand in my Waterco S600. When I turned on the pool filter after putting everything back together, the filter was working well but water was also running out of my waste/backwash line. Assuming it was the spider gasket, I put in a new one but there still was a fair bit of water running out of waste/backwash line. The spring on the multiport valve looks intact and there appears to be no wearing in the divider walls. I recently double checked the spider gasket and noticed that it was not well glued into place (I used glue sparingly). Hypothetically, does anyone out there think that potentially this could be the problem (i.e., water lifting the spider gasket up from its seat under pressure)? My pool company can't do a service call for over a week due to heavy workload so being able to figure it out would be great. Thanks!