Greeting to all. I've been away for a while. I finally got my Rotary & vacuum hooked up. By the sound of it there should be seagulls stuck to my roof, but I noticed the part pictured was leaking. I thought it was a safety valve that would open in the event of overpressure, but it seems to be stuck open? Happy thanksgiving all btw - Neville PS the vacuum gauge that should be on the other end of that assembly was broken so I just plugged it for testing - I lost the original, anyone know what I should get & from where?