Finished going through my new to me wing kit, and I have a question about the attach brackets for the ailerons. They are listed as a unit on the inventory sheet, and had a label with part number on them so I'm assuming Vans assembled them. My question is simply do they all look like this? I would think that the parts would be deburred before assembly and that the gap on the end would invite moisture and grit over time. Any suggestions on how to deburr without getting debris in the bearing?