I have a Special Pantah 600 1981, with Astrolite wheels and too many mods to list. It is now well sorted with new belts and shims. The overall gearing has been lowered to pull top gear so new sprocket and chain fitted. It goes very well but Iām afraid it needs a new home because of health and age. 
Hi Grey of Earslwood
Welcome to the site
Give Ray an e-mail with all the details about your bike and he can place an ad in the next Desmo.
RWILLIE2001@aol.com
How come the name and is that Earlswood just out side Redhill Surrey?
hi and welcome aboard 