This is from Motortrend: "A solid wire offers virtually no resistance, as it was designed to deliver the maximum amount of spark from a low-output ignition. This type of plug wire is perfectly suited for a points-style distributor (but NOT one that’s been converted to electronic!) or with a magneto; used with an electronic ignition, a solid wire cannot protect the sensitive components like a properly insulated wire can. A carbon-conductor wire, on the other hand, does offer the shielding characteristics needed for a “basic” electronic ignition (with the terminals acting as resistors), however, its high level of suppression (designed to prevent noise/radio interference) equates to reduced spark travel. A spiral-wound or induction-type wire offers the same or more high suppression as a carbon-core, but unlike its predecessor, has the low resistance necessary for optimum spark, making it perfectly suited for performance ignition systems."
So, the issue is how much resistance does the EI system call for?
As for MkII's, the issues are always the same: air leak, not enough fuel, too much fuel. Obviously, you can have all three at different times. But in my experience, the bike started when it came out of the factory. If it didn't, well, somebody bought the wrong bike. If it did, return it to OEM spec and it will do so again.
BTW, I started my log splitter this morning in two pulls by heating up the carb with a hair dryer first. It's either that...or stand there swearing at it while I pull my arm out of the socket. Sometimes, you just have to accept that when it comes to the EPA, elections matter.