unworthy1 I combed the bike over looking for a serial # but nothing, there's no serial # anywhere.As far as the bottom bracket situation, it's the drive side cup that I am having a difficult time getting the cup flushed to the frame.The non drive side with the lock ring fits fine.I did this without installing the spindle. I did a double take just to make sure I was installing the cups on the right side.I'll have to play with it somemore. Hey 23skidoo stop raggin on my beautiful tile.lol!!!!!!