I recently cleaned the carbs out on a 2001 ZX6R. When I was removing the mixture screws, I could not determine how many turns they were backed off from the seats. All four screws felt very tight, and I did not want to overtorque anything when turning them in. So I had to remove all four without knowing how many turns they were at during the original setting.

Well, I started out with 2 1/4 turns back from the seats as an initial setting. The bike runs very smoothly right now, but I can't tell if it's running the way it is supposed to since it's not my bike. I want to be sure that the mixture is set correctly. Is there an easy way to figure out where the correct setting is?