I cut the recess in the left axle nut so that the bracket will sit flush with the outside end of the nut, then drilled and tapped the sides for the 10-32 screws.
Afterward, I cleaned the AeroShell 33MS grease out of my bearing packer so that I could replace it with AeroShell 22 since I decided to switch my wheel bearings to that after doing some more research. I’m still going to use AeroShell 33MS everywhere else on the plane. Cleaning a bearing packer is a real pain in the ass. It would probably have been easier to just buy a new bearing packer.