Well bit of a mystery as we only changed the plugs to the non resister type. Graham came armed with old school points, condenser, starter motor but none were needed. Chris brought a 1965 carb technical guide. No change at first but one last crank before the start to change other parts with the go peddle hard down and it spluttered into life then ran sweet. Put it all back together and went for a short 5 mile trip and it ran absolutely fine fingers crossed
Massive thanks to Chris Sale & Graham Knott both C2 owners and members.