I am thoroughly confused. What screw am I going to adjust? Is it called the air mixture screw or the pilot? Can I access it without pulling it apart again? I have not synced carbs before. I mentioned in another post that I haven't touched the carbs in 12 years since I rejetted them, and it ran great up until my accident last year. I am looking at a short tube on the outermost underside of the carb, one on each side. Those are the screws I believe I am adjusting.

Can I do this without Carbtuners? Or will I need to purchase one to do this right?