Well if its having that hesitation on 1/4 throttle try bumping up the pilot.
I'm not too far from ya and I live on Lake Huron. Most bikes I jet with similar mods like 300 mains, Stock needle on 3-4th clip and 27.5 pilots 2- 2.5 turns out on the screw
Just got a freak of nature the other day.. and it liked 30 pilots with the same mods.. Dont know whats up with that bike.. lol