This afternoon I cleaned the pump basket and backwashed the filter. I think I made a mistake after I cleaned the basket when I started a backwash cycle before I let the pump basket fill back up. I went ahead and backwashed several cycles. I let the pool run for about 15 minutes when I finished, but the pump basket never fills all the way. The water jets in the pool are sputtering like crazy. I've just turned off the pump until I get a response. Please advise on what I can do to get all the air out of the system (I assume that's what the problem is).