I noticed that our local hobby stores all carry "BSA approved" wheels made in China. Are USA made "BSA approved" wheels still made anywhere? From the older posts I have read, most thought the Chinese wheels were of poor quality at the time. Is that still true or has their quality gotten better? My son's pack requires the use of stock wheels (no cutting or truing, only light sanding to remove mold imperfections.) so I want him to start with the best quality part that we can get. Thanks!