Round two, the work begins, if you can call it work

When I finally got to work on the bike I did what little I knew. When I had the bike running I found that the number 3 cylinder down draft tube was cold, almost icey, when the bike ran. The other tubes were warm if not hot. Ah Ha! That's why it was sputtering and backfiring. Number 3 was dumping raw gas into the exhaust and was igniting at odd times. I pulled the spark plug to test it and see if it was firing.

This is accomplished by removing the plug cap, pulling the plug, inserting it back into the cap and turning the bike over, the plug should spark. The plug didn't spark but I did get a shock off the wire. I called Dad. We had talked about the bike when he had less painful moments, which were few. He felt that the bike was choked up with "varnish" from sitting so long. When I told him the plug wasn't sparking he of course said to look at the plug wires and caps along with the rest of the ignition system. When fiddling with the plug part of the cap had broken off. While fiddling with that and trying to repair it a "screw cup" and "fuse like thing" fell out of the cap, and then a spring fell out. I'd never heard of this. I called Dad, he hadn't heard of it either. I tested the fuse with a multimeter, I didn't get any continuity. I went to Pep Boys, they said that there was usually something inside but that they didnt' have replacements. I went to the Honda Dealer in Crofton and ordered a set of wires and caps. The next day I checked the other fuses and tested the number 1 cylinder plug, it didn't spark either. I called Dad (see the pattern?). I asked, when I pull the plug and test it does it have to be grounded to the bike? He hesitated and said yes he was pretty sure it did. Once grounded all the plugs sparked (these were new plugs I'd bought in the begining of the week). I called and cancelled the order for the wires. While it would be nice to have new wires; I first wanted to make sure I had a running motorcycle before "spiffing" it up with non essential. Now I was back to where I started, a rough running bike with no obvious problems. Dad had suggested, as always, Marvell Magic Mystery Oil. During the sessions I'd been adding MMMO to the oil and gas as well as carb cleaner to the gas. These I thought might be adding to the smoke problem so I tried running it "clean" for awhile, the same result was whitish blue smoke. Where to go next?