I have a 2022 Ram 3500 pulling a 2022 5th Wheel, GVWR is 11k and it has tandem dexter 5k axles with electric drum brakes. In the truck's settings, I'm on Heavy Electric with gain set to 10 and it still won't lock up the trailer brakes. I had an emergency stop the other day and had to pull onto the shoulder to keep from plowing through a couple of cars because I couldn't stop. It didn't even feel like a hard stop. Something isn't right. I don't know what else to check/do. I can't even get the stupid things to lock up on gravel!