I got a set of Cam Belts and fitted them to the GS and started it over the last couple of days.With the choke operating properly it started with no problems and runs like a Swiss Watch.The suspension went up once I tightened the bleed screw and went up and down as directed by the controll lever but there is no suspension travel so it appears that all Spheres are U/S. Strange noise but extremely quiet and all exhaust system seems original or genuine replacement stuff.I will have the seats redone as the red velour has fallen to bits and It will be repainted.Thats about the state of play at the moment and will update when appropriate.
Thanks to all who have offered advice etc. particularly Brett R who has been a mine off information and practical advice.
Regards Dennis