Ok, we got the thing plumbed, all minor leaks tweeked out. Had the sump water at the water line, poured water through the return line to help prime the Little Giant pump. Plugged it in....quiet noise, not enough I think, and no water movement at all. It gets hot within about 30 seconds and we shut it off and tried it again...no banana. It is not sucking water at all, no dropping of water line, no suction at the bushing. Is anyone familiar with these that may know what is going on?