O.K. it sounds like your low speed needle setting is lean. Here's what you should do. Set the idol screw back to normal or to a 1mm gap. Then give he low speed needle a full turn to the left or richen it up. You want to get the engine to start out sluggish. From this point run one or two tanks. This is just in case you ran it lean for too long. Now you can put the tune you want on it.
The manuals directions really depends on where you live. You should be good after doing this.