AA Vigilante question

[FlightMedic938]

Is there supposed to be an o ring in the groove for the seat to seal against?

[The Last Snood]

I just opened the one I have and there is no o-ring under that seat, mine just snaps into that groove.

[DieManInTheRough]

https://www.manualslib.com/manual/28...?page=7#manual Last page there, keep in mind that the manual/and an AA tech state that the reg seat is made to be squished upon installation, shouldn't have to separate that part until the seat or pin fails.

[FlightMedic938]

I ordered a new pin and seat and it’s on the way. When I got this reg everything looked great inside. Reg seat, pin, and o rings looked brand new. I got about 50 or 60 shots in and it started sending full tank pressure. Not sure what happened.

[river031403]

Reg seat and spring in that area