[s55mercury66]

After looking, all my points, and both of my breakers will only allow the points to move around the pin. One thing that occurred to me is the vacuum advance lever, at rest, has the breaker plate pulled over where it is centered around the cam. If I can figure a way to lenghten the lever, it would tighten up the points spread (insert chuckle here). With the points set at .017, applying the vacuum advance opens it up to .024. That is quite a variation, but this distributor I am looking at is not the one on the car either. Limiting the vacuum advance would help, but might hurt mileage also. I will take a good look at the one Im running tomorrow, and see if I can dig up some more advance canisters.