basscat says optimal hight for there trailers is 18-19" to the top of the ball. i have 20 1/2". what could happen if the hitch ball hight is higher then recomended on a dual axel trailer? also i drove 2 hrs to get her home and i felt all 4 rims. the 2 in the back were warm and the 2 in the front felt normal(like it was not even been on the road). is this normal? are the surge brakes just on the back axel causing the rim to become warm?![]()