[Buzz]

Wilf, DV and Jack; since the problem is only on one side, I decided to try and isolate the bad cylinder. By removing and replacing the leads one by one I was able to determine that the #8 cylinder was the culprit. With its lead disconnected, the engine runs fine - meaning no backfire. Does this mean anything and if so where should I go from there?
Jack, what can you recommend a good ignition system to switch to?
I owe you guys at least a cold beer but you'll have to come down here to get it! I've got an extra room at the house if any one of you ever decides to visit these parts.