Something does not sound right. On the passenger side you have the B1 piston, B2 piston & Aux oil pump in that order starting from the front. There is also a kickdown solenoid on the rear end of the transmission that is also prone to leaks. It is black and has a wire going to it.
So given that information, can you be more specific where the leak is? Either way O rings can be replaced without removing the transmission and that is what is sealing the piston covers. The kickdown solenoid uses an aluminum washer.
I got too many cars!! Insurance eats me alive. Dave
78 Corvette Stingray - 3k
82 242 Turbo Volvo - Manual - 270k
86 300e 5 speed manual - 210k
87 420sel - 240k
89 560sl - 78k
91 420sel - 205k
91 560sel - 85k
94 GMC Suburban - 90k
97 Harley Davidson Heritage Softail - 25k
00 GMC Silverado 1 ton 30k