No nothing blocking the air valve. I wonder if it's the pump. Running well for a bit and then ramping down for some reason? I may switch pumps for the heck of it and see if it makes a difference.

That sealed beckett on the old Bullet's is such a piece of crap. Titus' idea to get rid of it was a sound one. I'm thinking that where the air valve screws into the housing is where the water is leaking in. I know it's sputtered water before. I'm at a loss.