[Jared]

The difference between what you're planning and a thunderhex bearing is .25mm or .009 inches - the thickness of two or three human hairs or two sheets of paper. This difference is pretty small and works out to around 4% less contact area than a normal thunderhex.

Although bearings were intended to have 100% surface contact, plenty of teams have used thunderhex without failure and the same concept before thunderhex came out with even less contact area.

However, I only have anecdotal evidence and intuition - I don't have any solid math or analysis to assure you it will work, but I think an offseason project is the perfect way to test it.