Hi
After hours and hours and hours, I think that I have found it!
http://www.rcscooter.net/manuales_ta...er_sm_2003.pdf
All the part numbers look the same, but the above is a 50cc?
The GG has a hydraulic clutch where the Derbi has a cable. That probably why the GG manual is up the pole! They used the same manual?
GG part pdf -
http://www.gasgasmotos.es/eng/frame.htm
Look under 2006 - MC 65
The barrel is a MK (Metrakit)..... still working on this one
There is light at the end of the tunnel!!!!!!!!!