I really like this mod for my application. However, not content to just leave "good enough" alone, I'm going to drill the air bleed holes larger.
IIRC, the next largest size drill bit that I have on-hand is a 1.38mm; & if my theory is correct, the slightly larger hole will perform better and enable another half-turn or so out on the pilot screws, at less throttle plate opening, for a given idle speed. It could be the sweet spot for this application. That should also make the off-idle transition even more satisfying.
Keep in mind these Keihin CV carbs have 4 pilot bypass holes in addition to the pilot screw hole. I'm also considering opening up 1 or more of the bypass holes, however I don't think that's necessary.
Anyway, on to the larger air bleeds, & I'll re-adjust the float heights while the carbs are off.
And if you haven't figured this out yet, I like tuning carbs...
...especially when it works
