OK, so its back together now. I'll try a slightly easier noob question.
What oil should I be putting back in the engine/gearbox ? (I've ruled out extra virgin olive/castor and groundnut so far !)
Welcome to the fun and friendly world of trials riding.
Jeesh, what a handy forum !
Oh well, at least Mr Lampkin's shop seemed quick and efficient for mail order spares.
I shall pop oop there and rattle his brains at the weekend.
Thanks Everyone.