OP is right on. I have the same 2016 big horn blacked with all the heavy duty options including plow prep package. Every morning on my way to work doing 45 mph in a 35 mph theres a dip in the road and I hit the stops. I have ran lots of trucks in the woods and used to be a wrench at a dealership. Its Hitting.. not hard but bottoming. lol getting full range of suspension . Might be poor compression of factory shocks?. I have 18k on mine. Thinking Thurn leveling spring kit, would give 2in more range of motion..