Hi Derek,
I had that problem after running the dog out of Vera to show my friend on the Valkyrie that I could beat him.
Started cutting out on one cylinder. Made it home, thinking I was shorted out or pinched vent or crud in the carb. My right plug was wet. After a bunch of carb cleaning and work, I figured out the right carb float bowl was letting in too much fuel. I am still working it back to correct position. I've worked 14 days straight and haven't had time to finish adjusting float. It's not easy, removing the bowl, making a slight bend on the tab and seeing 3/8" difference. I will hopefully finish today.
Your problem does sound to me like an electrical issue, and the wet plug came from unburned fuel due to lack of ignition. But your left cylinder may have been flooded when you swapped wires, you think?
