I live in Boston so there are quite a few shops around here and a couple relatively within a mile or so from my house. It's not really a cone and cup but more of an adjustable cartridge Bb.

This is what it is: http://businesscycles.com/graphics/tbb-miche2.jpg

So you don't think it's ovalized? What is the repair method for this? My thoughts were since it's loose that means material is lost so re-chasing or re-tapping the threads wouldn't help. What are your thoughts?