Originally Posted by
MetinUz
Actually this approach looks promising. If you cut a slit through the fixed cup, you can probably thread it in. You can then apply force to expand this cup so the threads are protected.
Maybe another approach is to insert an aluminum sleeve (with a slit) that barely fits, then try to expand it to reshape the shell.
I like the slit cup idea. If something with a suitable taper could be found, you could bang it into the spindle hole to expand the cup.