Well, true, two lighter springs are the answer, but the weight with no spring doesn't affect the timing as it moves. The rotation of the points plate is controlled by the weight with a spring, its just that the one spring has to work twice as hard.

I ran mine with one spring to see what would happen and didn't feel any bounce in the timing, maybe because the loose weight sits against the stop all the time the motor is running as there is no spring at all to hold it back off the stop. The one weight with a spring will get pulled back off the stop when the revs are low enough.

Anyway, fun thing to play with and it made a big difference in performance.

I ordered a new electric dizzy this morning.

Yea, i know how the timing "should" be, but no cigar.

And like i said, the one in now, has modified curve so it doesnt give some much advance like stock dizzy would. But the odd thing is why in the hell it wants so much advance now?
The stock dizzy was timed correctly and worked (semi-)fine until the bearings went.

I need a beer. Or 12.