Here is a front shot of mine. Your going to have to cut the cowl and expose the engine but it looks okay, cant really notice it unless your turn the plane over. I also had one hole onone side for th high end needle and a tiny hole onthe other side to stick a small screw driver into for the low end.

The Saito s have the same kind of setscrew as OS carbs where as you can use an allen wrench in it and tighten down it down to turn the needle.