Thanks for all the suggestions.
After being on the charger for maybe 3 or 4 hours and little to no change on the ammeter of the charger), I cleaned the points (which are new and properly gapped) with the newspaper as suggested above. It fired right up. I took it for a drive around the block, probably at least 5-6 miles and when I got back home, I shut it off and waited about 5 minutes and then tried to start again - it fired right up. When I resurrected this last year, I took the battery cables off and cleaned all connections to bare metal. Then I used the hi tech dielectric grease that I have from my former job at all connections. Last week, I replaced the positive battery cable that was made for me by NAPA - they know it is for a 6v system and I certainly hope that they used the heavier gauge wire as I requested. I measured the voltage at the battery with my Triplett analog meter and it shows just above 6v before I connected the charger. I didn't check it after charging.
Three weeks ago, I had this at a friends shop who basically went through the ignition system. New points and condenser, plugs, rotor, cap, wires and coil although I had already replaced all of that earlier this year. It would start just like I remember it starting 30 years ago. So it seems that it does not like to start when hot and after being driven for several hours. The carb does get somewhat warm after several hours but my mechanic friend does not think that is the issue.
When I have some help available, I'll try some of the other suggestions.
