I would make sure your tow-bar is working properly. If any of the pivot points are seized, the Jeep will not track properly and steering of the MH will be difficult. When traveling straight down the road, the center-line of the MH and Jeep must be in perfect alignment. Go to a large parking lot and drive the MH in a straight line, with the Jeep in tow, for at least 75 yards. Stop, get out, go to the back of the Jeep and observe whether or not you can detect any misalignment between the 2 vehicles. The more level the parking lot, the better. Once I forgot to make sure both arms of my tow-bar were fully extended and locked in; on leg was able to extend and retract. Because my Jeep did not track properly, my MH was difficult to steer.
Keep us advised with your your findings.
Ray