If you cant rotate the distributor (counterclockwise) anymore, then you will need to lift the distributor 1 inch then rotate the rotor clockwise one tooth then recheck. Depending on how far you have it out, your might need 2 teeth.
As I general rule I prefer to bump the engine over until the rotor is pointing directly to the front (right at me), This is your baseline incase you over rotate the rotor or forget where you where.
Make sure your mechanical (centrifigal advance) is working and the vacuum advance is ok.
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