I need assistance from those that may have had the same problem. I have a 5er that used to be towed with a 2005 Dodge Quad Long bed. Recently I snagged a "used" 2014 Chevy 3500HD dually.(only 7000 mil...
I have the same problem. It's not because of the truck. The pinbox on the trailer is too long. I've noticed that on some trailers the mount for the pinbox is farther ahead and they can use a shorter pinbox. I have some excess on the rear of mine after the box is bolted on. Doesn't look like it does anything. Thinking about cutting it off also..