One other item I forgot was to ask how it ran with the setup you described? Any bogging at mid range or indication it was running lean.
The reason I ask is that there is a vent hose for the float bowls that runs behind the engine. It is right beside the vent line for the fuel tank. If that hose is in a wrong location, it could create a vacuum in the float bowls which will cause a lean condition on the highway. The bike will be susceptible to cross winds causing the engine to bog. I mistakenly trimmed this hose before a trip to Edmonton a few years ago. I was getting a very lean condition and exceptional gas mileage. The plugs were white when I checked them. After checking everything for problems (and finding nothing out of the ordinary) I relocated that hose and fixed the problem.