I tow a twin axle compass magnum 21ft with a Discovery II. The van feels like it is pushing heavily against the car (not snaking ) but not comfortable. I have noticed that beacause the Discovery is a high vehicle the van is sitting on an angle (lower at the rear). Would a drop down plate on my tow bar taking the towball lower to level the van, rectify this problem. If so can you recommend which type of drop down plate to use for a heavy outfit.