To finish this thread, I hope...lol
I replaced the coil and ran the engine at operating temp. for over an hour and things look good. I hope the problem is solved. I did not do any other wiring until I tested with the new coil. Now I will replace some old wire and connecters.
The electronic ignition system turned out to be the Indigo model. I spoke w/ Indigo and I described the coil to them. It turns out this coil (not oil filled)does not last forever and that I should replace it with an oil filled one.
I want to say thanks to those that responded!
I also want to thank the people at both Moyer and Indigo. I have ordered from both of them in the past and their customer service is outstanding.
edit 8/28/08: I motored 6 hrs on monday and 6 hours on wed. All is well with this problem... Now I have two others 1) carb seems to be leaking. 2) egine is running close to 190 after a couple of hours of motoring (time for a acid flush?)