Next problem was the engine would crank, but wouldn't start. I checked the HT leads, coil and AB14 wiring, wondered if I'd got the auxiliary shaft timing wrong, then it dawned on me that the fuel tank, about 1/4 full, contained petrol over a year old. So I added some fresh E5, and a few squirts of Easy Start down the carb inlets, and problem solved! Sometimes it's the simple things
Cheers
John