rich settings in the pilot/needle will do the same thing. I would try raising the clip on the needle one at a time to see if it responds better, or worse. If it gets better each time you raise the clip, then go with a leaner needle.
Do the same kind of testing with the pilot screw. Start with .5 turns out and ride it. Then 1 turn out, then 1.5, then 1 7/8 If it gets better as you turn it out further, then go to a leaner pilot and start again. (make sure you try ALL these settings before making a decision)