Hi again Steve,
sorry it's been so long but I've really been stuck in!
Had a couple of minor problems. Firstly, the ignition sysytem was a miss because someone at some stage has wired indicators in and did a poor job so after tidying that and earthing the coil it started! It ran well but then on a cold start and idling for about ten seconds it clunked and died. I was really worried as the kickstarter wouldn't move.
After plucking up the courage I took the head off and saw that the cam sprocket bolts were loose and in fact one had jammed the sprocket hard against the casing hence the kickstarter not budging. An easy fix by just replacing the bolts.
I'mreassembling it this weekend and will update and send pics then.
Thanks,
David.