13. Though we had the housing sandblasted, a look down the axletubes revealed plenty of mung still present inside. One of our friends came up with this ingenious solution. We bought a cheap 3-inch-diameter wire wheel and welded it to a 3-foot length of 3⁄8-inch solid rod, chucked it up in a drill, and went to town. Quite a bit of nastiness was removed as a result, which could have otherwise contaminated our new gears. Always do a thorough cleaning when performing gear work, and that includes the axletubes.