Quote Originally Posted by Phillbo View Post
that bubble does not look too bad to me.. is it causing the pump to cavitate or make a lot of noise?


Does the lip of the basket slip under the cover and prevent it from seating all the way maybe ?

It almost sounds like the height of the basket for some reason is preventing the lid from completely seating and letting some air in. Could the lid have warped slightly. Maybe a new lid is the next test. Or maybe the basket needs shaving down 1/16" of an inch maybe. The only other thing I can think of is that the basket is creating some sort of vortex with the water passing around it and that creates the air pocket, no basket, cleaner flowing water.