Success: JFK MEX JFK
Called in to PTS about 2 J tickets for JFK MEX JFK. Delta was pricing out at $885.58 for my dates on their website - nonstop on their own metal or codeshares with AM.
PTS quoted me $735.58 for the same flights (Delta metal or codeshares with AM) with the IAP discount (not including $39 fee). Snagged JFK MEX on the AM 788 flight and back on the DL metal flight. Considering this is a 2090 mile flight each way I am quite pleased with the fare.