Do those Pro Ams really take ball bearings? I would have thought they were cartridge bearing hubs, but never had those ones, obviously.
I recently got the Sansin Gyro Masters, which are cartridge bearing, and man are they smooth. 😎 I thought my other Sansin hubs (BMX high-flanges with cartridge bearing) were smooth, but these GMs are a level up again. 🙂