hi all this is my reply from Masport..
Hi Peter
Unfortunately this machine is 20+ years old and there are no parts for Scott Bonner anymore.
Kind regards
Sueanne Griffiths
so back to square one, help!!!
I am wondering as a last resort to weld a little more onto the ends of the metal gears, say 2mm and see if this will then engage the plastic gears? As I say last resort.....