Thanks for the threads. Informative as usual!

Thinking of just using a pertronix ignitor kit now for ease of purchase and installation. Preliminary investigation seems to suggest they're considerably cheaper to buy from the U.S but I'll look around.

Re: dizzy weights, I filed a little bit off my weights (where they hit the stop) to allow a few more degrees total advance after I read that a few more degrees total may be beneficial. It was years and years ago though (when I knew even less than I know now...so not much!) and I didn't give much thought to how it affected the progression of advance. Anyway, would be interested to see what curves people are using for different stages of engine tune.