Correct. I am also saying that you can not check a plug connector for breakdown under fire just b/c it ohms as good.

What plugs are you using ?
As I said, the true and easy way to see the ignition on a real time frame is with a scope ign wave pattern. I would do a Parade pattern, as that compares all cylinder firings. Otherwise, you have to experiment .
My recommendation on these vinrage cars is to change them to a Point Conversion and be done with it. Probably the most bang for the buck improvent you can do on these. Quite simple and short $$$.
Point ignitions are far inferior to what you can get today and these cars benefit from the conversion.
There is another thread here in the last few days you may want to read that covers it.
I also recommend NGK plugs , but that is just a preference.
I had one that kept giving me troube and it turned out to be the plug . Altough new and burning well, I finally , by accident when installing it, noticed the insulator woud turn in the case . It was Bosch, so I brought it back to NAPA and before I could even start to explain to the counter guy, he threw it in a basket and handed me 6 new ones and said they knew all about it. They were made in INDIA . But I have never had a problem with NGK and they even seem to hold up better even with bad valve stem seals. Again, my preference. I am not alone on the NGK swap.

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A Dalton