Why is it that on both of the new Jayco's I have bought, Jayco doesn't want me to use the bumper for anything or it voids Warranty? I know that the 2007 29 Bhs TT prob. shouldn't have anything on the bumper, but the 2014 Jayco Eagle 31.5 FBHS should be able to hold up to some kind a weight. What do you all think?