my timing light is old, not dial back, and i didnt pull the dist cap, was getting dark, i will check the dist springs tomorrow. i did disconnect the vacuum line from the advance on the dist when i checked the timing and i did plug the line too. how much difference should there be in the readings with the vacuum line attached/disconnected at idle?

proud new owner of a 1974 plymouth satellite sebring plus in decent shape, let the fun begin