With regards to:
yes jet set your right at cx we can px up to 55 hrs
23-34 is not uncommon on the freighter patterns
bear in mind that these are AFTLS limits, and they apply to everyone. 55 hours is your duty limit in any 7 days, whether they use you to sit in the sim, or the flight deck, or PXing. Once you reach that, you cannot be used until the 7 days is up.
Also, your rest must be at least as long as the preceding duty period.
I just hope that, given all the talk of excesive PXing, that you'all are keeping very close tabs on your
total duty times (not just FDP)!
You can be assured that crew control will not.. (and it's your licence).