My pool has one suction outlet and one inlet. When I run the pump with nothing attached to the suction side it works great with no bubbles in the pump basket. As soon as I attach out suction cleaner (or even just a couple lengths of hose) it starts to fill with some air. It ends up with a inch of air or so in the pump basket and a few minutes later the SWG is full of air as well and it stops generating because it is not full of water. If I disconnect the suction cleaner at the weir it starts to work fine again. Any ideas? I have