OK I've changed gasket for pump basket and o-ring @ the vari-flo valve and base. also checked all conections from pump to the filter.started the pump up on filter, window showed no bubbles yeah. But awhile later hours rechecked, guess what saw my old friends bubbles. Rechecked all connection all threads no water leaks maybe a few drips around vari-flo head and sand base. Even checked drain plugs on pump basket. restarted everything looks good for awhile then bubbles come back and water level in basket dropped about 1/4 of inch and all kinds of bubbles. Note that when I started my pump in filter guage reading 24PSI any suggestions.