[patrickt]

Since you have the distributor out of the car, use your VOM to check the connectivity between each terminal on the cap, and the center terminal of the cap, as you turn the gear with your fingers (and thus rotate the rotor). If you only get connectivity with terminals 2 and 6, then there's your answer. If you get connectivity on all eight, then I would suspect the distributor was not installed properly and cylinders 2 and 6 were just the "lucky" ones that had a spark come at kind of the right time.