Factory Bearings
The EDGE CPC uses a mix of metal and nylon bearings. The balls appeared to be greased in something the consistency of Vaseline. The nylon appears slightly larger than the metal, but that could be an optical illusion. This mix of metal and nylon appears to work much better than the old approach of using only plastic bearings and after removal of the clutch, the motion was quite smooth and easy. However, by that time it made sense to investigate further, and by this point, I'm already here so why not try the all-metal approach, saving the existing balls in case I need to put them back.