There is a fourth option: use a cartridge with plastic cups. The cup threads will be recut/mangled on insertion, so this is a kludge but appears to work.
I used a Sunrace cartridge that takes cottered cranks as a fix for severely worn BB threads, keeping the original drive-side cup.
The installation has been trouble-free for at least 4 years. (I am about 74kg, or 165lb.)
A web site that I can no longer find suggested that some Dutch bike shops do this routinely.
Last edited by gilesa; 12-23-18 at 04:50 AM.
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