[RcTechnologies]

And for good reason. Were at 9,000 mi and doing all maintenance items on the list, incl carb cleaning and valve checks. ALL is good.
For curiosity we welded up a "tuning purposes only" exhaust system that isolated the cylinders and housed O2 sensors. After syncing within 1 mm Hg one side had to be enrichened drastically to make the O2 sensors match, as the full service maual says "Pilot Screw Setting: #L: 2 1/2 #R: 1 3/4" (pg 3-16). Plugs look great now. But the question still burns, Why'd the engineers at Kawi do this, and why do the O2 sensors concur?

Note: the factory setup and tune (sync and pilot turns) makes one cylinder work substantially harder than the other.