My older impact that I have added a power plenum to has developed an unusual leak, so before I tear in to it I thought Id post a message for any do's or don'ts. The leak is around the front brass adaptor that plugs a machined hole through trigger block (ive located it at the end of the phillips screwdriver). Im pretty sure that part is A24 on the Impact exploded view. The rear brass plug is not leaking. (I did leak detect with windex) Probably the Oring (part A25) has gone bad. It lies immediately behind the bottle adaptor (part A23) that is on pretty tight, I think it may be lock tight(ed). Any suggestions would be appreciated especially removing the bottle adaptor. Ive attached the photo: