[that_guy]

I made the groove everyone is referring to a little wider than the bracket to future proof them a little. It was only intended to limit the chance the rack could slide off while driving and give you an opportunity to hear the rattle and still catch it before it was too late. Metal on metal with vibration over a long drive could loosen. Brands like eYakima have a plastic coating over their bars which their brackets squish into. This wasn’t possible so I had to find another solution. Hope this helps other DIYers.