Well as an update I got it to stop smoking, tried everything else so adjusted the injection pump away from the engine about 3mm, don't know if thats advanced or retarded it but it seems to have done the trick, idles now with only minimal smoke and revs fairly cleanly (did adjust the fuel on the pump as well).
Given me renewed confidence that I might actually be able to take it on the road now and only annoy cyclists.
Given me renewed confidence that I might actually be able to take it on the road now and only annoy cyclists.