PS I am facing the same issue. My 2017 Eagle HT 27.5 RLTS rides 3"nose high on my 2016 Ford F-350. I have about 8 1/2" space between the truck rail and bottom of the 5er overhang. I also have the Morryde 16000lb pin box. I have a Curt A16 and it cannot be lowered. I have been told to use blocks or change to a different hitch which would be Very pricey. The block kits are available through
www.trailerblocks .com in many configurations. My concern is how top heavy will the 5er be? The center of gravity is going to be higher and living here in upstate NY the roads we travel in VT, MA, NY etc. have quite a bit of twisty's and turn's in the roads...We welcome any constructive thoughts as well