To be honest until you raised it nobody here noticed that we were being underpaid.
I don't know what RDFRA's current relationship with C&A is like but I can tell how pay rates were communicated in the past. The DOD would simply email or post a copy of the rates they had agreed with PDFORRA and RACO (like the ones you provided the link to) and it was a take or leave it scenario.
That was fine when our pay was pegged to the PDF. Now that it has been separated, RDFRA needs to have its own pay negotiations talks. That or restore the parity.