The plugs only have a very thin coating of carbon that easily comes off with your finger. Ed's point it well made and an easy test to do, though.
"But you know what? Obviously, after 12 friggin pages, you're not getting anywhere and have replaced Danny's ignition system with your old one anyway, so button everything up, get it flat-bedded to someone who can properly diagnose the problem(s) and get it back on the road, and stop tormenting yourself."
Agreed, but the hassle factor involved in that is what keeps me going back to the garage. Sisyphus indeed.
HEY!!! 13 PAGES!!!