I read all the quality control grips about the gear bores, gear teeth mesh and such. There was no other place to get the replacement gearing unless, you wanted to pay more than the mini lathe cost. So I bought the set, expecting to file teeth and lap bores. NOPE, every gear I use was dang near perfect. One of the #80 gears had a sloppy fit but, the other #80 bore I received was spot-on. My lathe now runs a tad quieter. The packing was OK because, the manufacture packed the gears tightly in a HD plastic bag, and shipped it in a cardboard box nicely sized for the gears. I would have cleaned them before I used them anyway but, there were little pieces of crud in the bag, with the gears. It was like the bag had not been closed yet, it was Friday afternoon, and they blew the packing table off with compressed air, just to get out of Dodge!