Did you say 'Carb Cleaner' ?? Hopefully you meant something else, or MC specific carb cleaner....cause automotive car cleaner will melt the internal parts of an FCR carb.... Compressed air won't remove a varnished block above the pilot. You have to send some 40 test fishing line up there....cause it's a right angle and it gets clogged in the corner. I can't recall what I used the last time, something in a can that probably was designed for cars. I don't have any damage to anything internal that I can see, nor have I ever from using carb cleaner. I'll give the fishing line a shot when I have a chance to pull the bike apart to yank the carb again.