I have a 20" Aquaview sand filter for an above ground pool. The filter was purchased with the pool in May 2014. As part of the winterization of the pool I removed the collar that holds the valve to the filter and popped off the valve. The valve will now not sit fully into the filter. there is about a 3/16" gap. This is preventing me from getting the collar on. If I press on one side I can get that side to seat but obviously the other side rises up.
Any Ideas? Do I need to empty all the sand out and start from the beginning?
As always your time and help are greatly appreciated. Especially since I have a 13 and 11 year old breathing down my neck