I have a minor isuue w my pump pulling air. Was wondering if anyone else has had this issue. At least i assume its the pump as my return jets to the pool have air in them. You can tell by the sound of the pump that is a little louder because of this. I have the same pump on my waterfall and it does not have this issue and is much quiter. I have placed silicone lube along the seal of the lid with little change and also used the lid from the quiter pump w no difference. I also tried switching to bottom drain pull only which didnt help either. Maybe someone w these pumps has had a similar experience.