Using two stock light springs in distributor advance, good idea?

Once again, I must bow before the master of the board for saying exactly what I was thinking. As much as I would like to have access to a distributor machine, you can do the same exact thing with a timing light and a tach. A distributor machine will tell you your advance rates at what rpm and so on, but eventually you have to run the distributor to see if the baseline you establish is correct or needs fine tuning.