Forgive my lack of carb knowledge...Shim under main or pilot? Should I try to adjust the air intake on the carbs before doing this?
Brand new plugs put in 100 miles ago and they look like they are burning fine.

Best looking black girl around! 2004 SM-spokes, solo seat, lowered rear, 14 in apes, bobber rear fender, no front fender. Flat black all the way around. Jeff