Is this the one you have?



If so, the measurement you're looking for is NOT the one you show in that BB picture - it is the measurement from edge-to-edge of those inner threads where the smaller BB cups thread into. As the threads are sunken in a few millemeters inwards from the BB shell lip, I dare say your BB is more then likely on the money, and that you're measuring it wrong. Let me know what you have over there.

EDIT: One other thing - did you also clean up the powdercoating on the edges (not just the inside) of the BB shell? The edges may be improperly faced (from factory), and may need re-facing.

Take care,

-Kurt