I have a 2015 Redwood 39MB with a Moreryde king pin towed by a 2019 Ram 3500 DRW. I have only pulled the 5th wheel one time and the trailer brakes did not seem to work. I adjusted the integrated brake controller to 10 with no result. Slowed down to an idle and pressed the emergency button on the the controller. The trailer slowed but did not stop. The trailer should stop the truck. Anyone have any ideas?