I took off my Givi sidecase racks, took off the grab rails, and used lots of washers to shim things so I could put the Givi sidecase racks back on. I cut out a rack shaped piece, from 1/4" aluminum stock, and got started figuring out where to drill the holes to attach it. I'm going to drill several sets of holes so that when I have no passenger, I can put my topcase on the rack under the passenger seat, to keep the weight as low and forward as I can. That's why the grab rails had to come off.