Update I let the air out, to see what the deal was and see if the damper was working as well.
the oil appears to have been contaminated, its milky / foamy. It would appear I have to disassemble this and clean it out.
while I've got it apart, I could repair / replace the cartridge. Can anyone offer who other than Rock Shox sells parts for this?
The SRAM website has good instructions for fork service. What year is the fork? It's usually in the serial number on the crown or inside of one of the dropouts or on the steerer tube. Sram is pretty good at helping you identify the model year over the phone.
If you don't know the year then you'll need to know the technologies that it uses to get the right instructions. Is the air chamber dual air, hydra air, air assist, etc. Is the damper system a pure model, c2, pure delite, remote lockout or on the top cap....?