Originally Posted by
andersedwards
2 years of riding I decided to upgrade my drivetrain recently. So when I went to put a new bottom bracket in I noticed the removable cup was really going in rough for the last portion of the threads
So it was fine until you tried to fix it.
I'd hope that it was the bottom bracket but you say that you've tried two different ones and they both did the same thing.
I'm betting that you cross threaded the replacement bottom bracket and now the threads are all buggered.