I have a Hayward Pump and this year when I put everything together for opening I did so with my FAFCO solar panels in place. For the first couple of days the pump primed fully, no air bubles in the pump basket. Now it won't fill all the way to the top. There is like half of the clear top to the pump basket is air bubble. It happens whether I have the heater turned on or not. Where am I getting air from. Is the strainer assembly itself drawing in air, or is it at the connection to the front of the pump. I have a valve in front of the basket so I can shut it off to clean the strainer out. Could it be possible that I have to pull that off and re thread it with plumbers tape and put it back on. I noticed also a little drip from time to time in the conection between the pump and the filter. Could that be causing the pump to not prime fully?