thanks for your posting on this forum.
In part I did the same things as you did. I converted the engine to CDi ignition as the main 'cable tree' was a 500custom one. I hope this works out.
The engine runs now, but seems to have some irregularity. I haven't hit the road with it yet. Probably it's caused by the carbs, the ignition, or (god forbid) the stator which is second hand and might fail. Also synchronising should still be done.
What I can hear while having the engine running, it sounds like good old 500 with the 500 custom exhausts, only a tiny bit 'funkier'. Probably I should fit the Euro exhausts.
I'm not quite sure if I can go the SJK, in either case I'm going to inform this forum of the proceedings.
lang leve de rat-bike!
(ofwel: als het maar functioneert)