I just finished the second day of my Pacific Coast Highway trip and, unfortunately, replacing the spark plug wires and inner distributor cap did not solve my problem, it continues. Fortunately, it is mainly when accelerating from a stop and long steep climbs. So, most of the time driving along the coast all is well. In fact, better than well since I enjoy the noticeable increase in power from the denser air that most of you get to enjoy all the time.
So far, the problem is not threatening our continued progress and hopefully won't. I'm betting that the distributor shaft looseness has let the rotor hit the distributor cap terminals again and is causing the problem. Hopefully, I won't have to dig into it again to find out for sure until I get home Saturday.