I think you right if the pluger in that stuck it's time to look at a new unit as the old one may just end up leaking on you.Unscrew it and take it appart, you have nothing to loose at this point.
68 Firebird 400 Convt 33 option car:tilt, cruise, AC, 281 trim code leather interior, PDB,PS,P top,headrest, rear antena, Ralley 2's, TH 400, Speedminder speedo buzzer, clock, tinted windows, floor mats, remote mirror, door edge guards, remot decklid release, trunk lamp, saftey track rear, am fm radio, visor vanity mirror, custom seatbelts, console,heavy duty air cleaner, exhaust extensions, tinted glass- all. All factory installed total price $5121.18 !!!
