I am pulling our 3400 with an F-350, and have absolutely no problems. I did not purchase the slider hitch, and have had no problems. I do not have Mor/ryde, and the coach rides fine. We had a choice between a unit with Mor/ryde, and one without. We really liked the unit without, and the dealer explained that the unit was well balanced, and that we shouldn't need it. I called the Mor/ryde factory and found out it could be added for around $900, so we bought the unit without with the idea that I could add it if I really needed to. So far, so good.