Martin, did you cure the dizzy problems? I am running a Mallory unit and found it advances too quick. It's ok up to about 1800 rpm then pinks a little then after 2000 rpm it's ok again.
Keith I found to get the engine running the dizzy could be nipped up in the centre of the slots. I have made a timming marker but mine is a 59A and I can't remember how I did it.
A word of caution, the Mallory electonics don't survive problems well you need good plug leads and I had to remove my steel wiring harness as it took the electronics out, don't use a too powerfull coil either.