Bottom bracket fitting problems, help needed

[ishaw]

The BB I have has twice as much thread as the one above. No reason that should be an issue but it's certainly a difference.

I guess I'm back in the market for a 73 X 113.

 

[Frankenorange]

Every now and again there is going to be a cup thread that is at the upper end of a pass and it is going to be too tight in a BB.
Would be interesting to put the cup up on a shadowgraph/profile projector and check the profile of the thread. Maybe something happened with the tooling and a bunch came out a bit goofy and it isn't actually a pass.