I'd follow Muskrat's train of thought. I've got one bike with a Boyer, twin-spark (ie dead spark) set-up using 2 6v coils in series in a 12v system. That's a Norton system (clockwise drive) on a Royal Enfield which has to be triggered by a couple of turns on the kick-start before trying in earnest. You'd expect darn great sparks from a system like that at kick-start speed, but I have fatter ones off my magneto and traditional coil and cb systems. Cold starting can be a PITA. A few kicks and nothing happens, then suddenly, just as you think it won't, the thing fires up with a noise to waken the dead. Very mixture sensitive too in terms of amount of tickle - that bike runs a pair of Monoblocs. Once started it runs beautifully, and it starts hot OK. I don't think there's anything 'wrong' with it, least if there is I can't see what. Minor fiddling with the timing has helped, but not made it foolproof. Reckon they need a hefty spin on the kickstart, as well as a fully-charged battery (very important) and exactly the right plugs, perfect HT leads and caps, etc etc. Once or twice, a push-start has worked very well - but who wants to do that with 400lbs-odd of metal to shove around? To be honest, I'm a bit disappointed with it, but I do really like the smooth running when it does fire up.