One last item to check on the carb before you start on the ignition system. I had a long chat at the Annual Rally with Otto Mederle and Jens Buesse who have studied the Solex carbs in great detail. One point to check is that you have the small slot in the gasket which goes in the joint secured by the 4 screws. See attached photo. If the slot is not present in the gasket, the bi-starter will not work properly.
36 4G, 37 VH, 54 KH(A), 75 Healey 1000/4, 52/53 ex ISDT KHA (project).
Former Machine Registrar & Archivist, General Secretary and Single Spares Organiser (over a 25 year period).
Now Archivist once more - but not Machine Registrar.