I wish i could tell you I've gotten to that point but I havent. I'm having trouble getting the old BB off. silly me thought it would slip right off. ha ha pretty good one, I know better now. Even lost my temper, havent done that in a long time (well not at an inanimate object anyways) it's now in many chunks, and theres lots left to file off. i did manage a 1/8" tear/crack in the end of one chain stay. It seems like it will be removed when mitered to fit the new BB, well i hope so at least. I'd hate to turn this into a BB and chain stay replacement. I figure if I come out of this will all my fingers and toes and some knowledge I will be pleased. If the bike is ever road worthy again, thats an extra bonus.