I am considering adding Yakima tracks to my 2010 Fleet in order to potentially attach a solar panel. Poking holes in the roof gives me heart palpitations so I wanted to see if anyone had any insights or recommendations. From what I've pieced together in other threads (correct me if I'm wrong) the tracks are attached to the beams in the camper roof with #8 1” sheet metal screws, not the supplied Yakima fasteners. Butyl tape should be applied under the tracks and Sikaflex should be applied liberally in the screw holes. I am not sure about the number of screws needed or spacing. Has anyone ever used a square head bolt in the tracks rather than the flat Yakima nut? I see Thule makes such bolts but don't know if they fit in this track. Thanks!