Oi Vey, a guest killed my head

[RAD]

Update

Afterward the hose that clamps on the manual pump leaked a little and I got it tight. I have a small gurgling sound and not every time, but it should not happen at all, I get a little back fill after the bowl is dry?

Recheck all connections or could we have messed up the pump baffle?

Could be the joker valve in the head....its like a check valve....easy fix