Gasket O-Ring identification

[johnwaynejeep]

I pulled my engine, tranny, T-case out of my 85 K2500 and I could use help in finding the right gaskets and O-rings to use with the TH400, T-case adapter and NP208 T-case.

Currently there is an O-ring between the Tranny and adapter plate and a gasket between the adapter plate and NP208. Does this sound right, or should there be a gasket and O-ring between the tranny and adapter plate?

Also, how do I clean this before re-installing? Should I just use ATF to clean any debris off the shafts and mating surfaces and re-install, or should I use an actual solvent to clean the mating surfaces and shafts?

Thanks in advance for the help and for the great site here
Robert