Originally Posted by
joejack951
How far into the shell were the threads crossed? If it is only the first few, chasing them should restore things to fully functional as the remaining threads will still be at full strength. If someone really ham-fisted things and threaded a cup all the way while crossed, there is much less chance of saving those threads.
This is the correct answer, if it's just the first few threads that are buggered up, the BB can be repaired. But you need a BB tap, and the skill to use it to get it to be able to put the BB back together. And you would have to be very careful when you go to start the threads on the BB cups so you don't mess it up again. And I'd use loc-tite when you put it back together.
Somebody would have to really strong, and really dumb, to get a BB cup all the way in cross threaded.
Good Luck.