New-gens don't have mid-range lean-spot like pre-gens, so really don't need any carb adjustments in stock form. Both super pig-rich under WOT. Even with full Tyga exhaust, free-flow intake with snorkel removed, I still had to go down 1-size on mains. That's with extra 22% more air-flow than stock (dyno showed 22% power increase with above mods).
Bob, shimming does change mid-range fueling. It basically is tricking carb into thinking air-flow is higher than actual with higher needle position. This increases gap between needle to jet and lets in more petrol. It doesn't affect high-end much because needle stops tapering at tip. Shimming is like taking "Needle Taper" curve and sliding it to left.
So bike runs worse now than before winter storage?
How far off were valve-clearance? How much did you have to adjust?
Do you have table of before & after measurements?