Have attempted to set timing but end up with the 3 stator tightening screws being right at the end of their slots to try to reduce the degrees of advance to 26. Previous visible marks suggest the setting has been around the middle of the slots. I have used a piston-stopper and a multimeter (alternatively on buzzer/continuity and resistance settings) together with a degree wheel. My ignition coil (HV) is disconnected, as is the battery.
I am reasonably confident in the points gap. Could there be an issue with the points cam (which so far, I have not examined)? How does it locate correctly on the crankshaft? I believe there is a spring ring but, after it passes over the woodruff key does that ensure it will be reliably in place?
Any other tips/ideas, please? I believe this scoot to be stock.