I'm having a sporadic issue with my pump and pulling water. Most days my pump will start and it will pull water into the pump and get my full system going, but some days I have to go out and bleed air out of the filter to get it to pull water. Once it's running it seems fine with no air in the return lines, but then a couple days later I'll have the issue again. If I had a seal issue I would have expected it to be more common versus sporadic. Any thoughts here? My biggest concern is I have to leave and my wife or someone at our house won't be able to troubleshoot it like I can.