ok give me some basics, I bought a cheapy one from advanced auto the one where you can dial the advance it. I had to replace my fuel bowls and since I was doing that bought new needles and seats. car is backfiring out of the carb bad. So I wanted to check the timing, now should I start on 0 dial it in and then do the advance on the light? Right now the light is saying 60 degrees advance, seems kinda high to me but it is zero'd out on the timing mark.