here's another goofy question...
is your clutch arm hitting your carb? i've seen that before. you might be shifting your carb when you pull in the clutch, enough to make an air leak.
i don't think the wires, the magneto, the cdi, or your connections are related to your problem if the bike runs, and revs, but just won't idle, it's almost certainly gotta be fuel related, not electrical.
be careful how much stuff you start messing with, or you'll compound the problem. eliminate one thing at a time till you find it.
and i thought the same about my plug wire, but it really does unscrew. you wouldn't know by looking, but it does.