There are a couple of things that I would suggest that you check. Did you replace the pilot jets? If not that would be my first move. Second run a small wire through all of the openings for the pilot circuit including the air bleed channel and double check the setting on the air bleed screw. Pull the needle jet and check to be sure that the moat around the top of the needle jet is clean and that the pilot air passage is clear (note the small hole in the attached photo). Our experience has been that most of our idling problems relate directly to the pilot jet and cleaning out the moat at the top of the needle jet.