Another James79 accomplishment, the AIR1 dive/predive switch, this AIR1 had an old type lp seat but since I had it open I put a poppet with the 104 oring seat in it, it breaths so nice it could almost serve and an iron lung. The fit of the screws is having me lean toward it not needing the external sticker or any other seal, if you need an oring replacement on the switch this removes the fear of breaking the switch clips, sort of a hybrid pilot/AIR1 set up.