Pat:
It sounds to me as the final option might be in order. The Torch! Go get portable cannister torch and heat up the BB from the inside. Please do this with a delicate touch as to not flambe' the paint. We are going for expansion and contraction in this case. This was taught to me by an ol'reliable wrench here in Laguna. it has never failed me. Remember to be very sensitive.
I take no responsibility for your actions (disclaimer)
Cheers
Jack (flame on) Gabus Laguna Beach, CA United States of America jack@shermangabus.com http://www.wooljersey.com/