So I've had an issue with the hub centers on my strange axels where they were too big for the wheel. I asked their tech support and they made it seem like I needed to take the axle out and have a machine shop turn then down to fit. Instead I got a pair of 5mm spacers to push the wheel past and off I went.

Today I took the brake rotors off to set the parking brake so it actually engages and discovered the hub centers are really just caps that have a bolt through them. Took them both off, chucked them up in the trusty mini lathe and turned them down to fit the wheel center. Now I can put the wheels on with no spacer and they fit correctly. Hopefully this helps someone if the run into the same issue.