Well the results are in......caps 1-4 were 4.67 ohms each, cap 2 was loose and cap 4 was 5.65 ohms & the threads covered in what appeared to be cable insulation...the attached coil lead was also a bit chewed up. I ended up trimming all 4 leads to get to some "fresher looking" wire, cleaned up #4 cap and reinstalled everything. I may indeed need that NGK coupler because there is no way I can trim any more length from the coil wires now....they must have been cut a few times over the years.
Still haven't run the bike and don't know if anything I've done will even make a bit of difference, but it's been fun learning and wrenching on the old machine. My header is due back from ceramic coating Tues or Wed....once I get it back on I'll see how it runs!