2020 Ram 3500 with factory brake controller: I have a Jayco 5th when’ll 39 foot. When I plug in 7 pin and go to select the 5th gooseneck for heavy electric brakes it says trailer not compatible. On my trip to Florida every time I rehitched it say same thing and so I need to manually put on controller for harder stops. I have contacted dealer he says it’s the trailer axles, and Jayco says there is a module to make them communicate however i haven’t been able to find anything. Anyone have any suggestions ?