Thanks Mach4. That is pretty much how I envisioned the process but with some more details. How concerned should I be about getting all the PAG residual out of the compressor? Do I need to flush the compressor somehow?

Adding new oil should be done through the drain plug or suction port when installing the unit in a fresh system?

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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge