Thanks R
I am catching on, I pulled the primary and right side chain covers off the engine last night and mechanically the old girl looks pretty sound wear and tear wise but the nuts and bolts on things like the Generator, Dizzy and other external fittings are well worn out so I guess there has been a lot of tinkering to keep the bike running. I also see plenty of brake drum wear etc too, all quite consistent with some earlier advice given regarding bikes from the Asian regions. In saying all of this the bike has good bones and deserves a re-build.
It seems the old owner has had the front and rear brakes done, (but they didn't skim the hubs!) the gear box has had a re-bearing as well as the bottom end of the engine, I guess I am still going to have to strip the motor though as it was not well covered and the barrels were not fitted.
Thanks JBW! I look forward to it.