Good Initial Timing and Too much Total Timing Problem. Seeking guidance to minimize total timing. 1969 Swinger 340 4 Gear

Dartfreak75 said

Im not sure how they adjust. I have a proform. It adjust with the screws. Which is very nice I like it better than the slots.

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Since there are no marks on the distributor weight settings, I wonder if adjusting the total timing weights can be done with the distributor in place, so that one can more easily start the engine and check the results?