Originally Posted by Sewing Joe
Are you sure that's mold and not aluminum rot? Aluminum rot is not something you can readily fix. Typically when that happens, the machine ends up being used for parts. You might want to join the Featherweight group on Yahoo to get some opinions from the gurus on that group.
I have never heard of aluminum rot....after cleaning, it does not appear to be mold (is not affected by wiping or bleach) Metal is rough and white....