The original CDI is known to cause problems usually when hot, the 6v electrics are not the best in the world hence decided on the conversion.
Easy to do, should be money well spent as I plan on keeping this bike for sometime.
I spent ages trying to track down a "fault" with the headlamp, just could not get it to work then I realised..........it only works when the engine is running - just call me Richard.
I have also fitted a nice high intensity LED lamp at the front - same as the one I fitted to the H2.
Anyway with the upgrade fitted it starts 2nd kick from cold, 1st kick when hot, no sign of any kickbacks - all looking good so far.
Just waiting for DVLA to come back with a Reg No, all there is left to do is fit new brake shoes (dont trust the bonding on 40 year old shoes), and fit some new tyres and tubes.