Hi all, I have 2 sets of 60" Yakima Tracks for a total track length of just over 120" to mount on the roof of my 2014 Hawk Shell. The roof is 128" in length so I'll be within a few inches of the front and back. I understand from reading a thread that the aluminum frame members that I'll be screwing into narrow as they reach the front and back. Is that the case? If so is that an issue? Any install help is welcome as I am quite nervous drilling into the camper especially as there will be a total of 44 holes to drill!