I commute from MMMY to ATL on a weekly basis. I tried to get CAL, specifically xjet, to let me jumpseat back, but apparently you can't. I have the jumpseat instructions printed I carry with me and show to the agents here stateside so they can properly put me into the system to JS to MMMY. It specifically prohibits jumpseating from outside the US back in. It is much easier to nonrev than jumpseat back into the US. In a year and half I have yet to miss a flight or have the need to buy a zed. I would love to know how to let CAL jumpseating coordinator where the problem is.... anyone know how to contact them?