I'm very confused at what seem to discrepancies between maximum payload for various trim options. On the Ram towing guide, it says a Tradesman quadcab 4x4 has a maximum payload of 1260, while a Big Horn or SLT are 1398. I would think the Tradesman should be higher?! On the spec sheet, all are listed at 1400, with the Big Horn having a reduced GCWR. On the same note, the towing calculator doesn't show any change for the higher trim levels when you select 3.92, but according to the chart, all but the Big Horn and Lone Star should increase. So which is it?! My dealership doesn't have many options in stock so I can't just go look at the door stickers. I understand the various options will decrease the individual capacity, but the towing guide doesn't seem to make sense. And I'm probably going to special order something, but obviously won't know what its ratings are until it shows up!