I drilled the throttle plate bleed holes out to 1.58mm, set the pilots to about 1&3/8 to 1.5 out; this improved the light throttle low-rpm cruise AFR, however that narrow band just off idle is still a bit richer than what I want, sometimes sub-12 AFR; the 60 to 75MPH light throttle cruise is also a bit richer than what I want; that is in the 13.5 to 13.9 range, depending upon conditions. That's leaving some MPG on the table.
Everywhere else is good.
I don't believe at this point that it is necessary to drill the throttle plate air bleed any larger than 1.5mm, & if I could do it over again that's what I would have done.
Overall the bike runs very well, & on the road it is mostly in the 12 - 14 AFR range, depending upon conditions; however, it is not yet optimal at cruise (slightly richer than I want), & above 7500 RPM it starts to go slightly lean (no biggie) approaching 14 AFR.
I'm working on this. I want to do a bit more experimentation with NBAD needles (790 BA/SM), so when I get some time & decent weather, that's where I'm going next...
