You can always use the same axle (if it isn't broken) , buy two bearings and use only the outside part (on the inside the axle) and put a spacer in between very tight (the one wich is used for small diameter handlebars and normal stems is ideal). Then the bearings enter in the bb cups perfectly and you get a cheap, lightweight repaired BB. Sorry for my english, I don't know if it's understandable
PD: I've done that with my First BB and now it works perfeclty