Hi, just found this site after looking for diagrams for front spindle on the Bultaco Sherpa 250 1971 (model 80) I have purchased. Never rode one of these as its nearly as old as me but always wanted one!!. Bike is a bit of a basket case but hopefully will be up and running again once I have sourced  the missing bits I need. I have picked up a Clymer workshop manual but unfortunately it doesn't have blown up  drawings of the front spindle, wondered if anyone can photograph or post a diagram of  the layout of spacers etc for the front spindle as I,m scratching my head about what I,m missing.. cheers.. and really like the site! 
Martyn