I really need some help tuning my mbz 220sb. Finally got it to run with some fresh spark plugs, the “new” plugs that were on it after 2 uears were all shorted to each other, essentially the inside of the spark plug was no good on ALL of them which resulted in intermitent good spark, weak spark and ultimately most of the time no spark. After eeplacing the plugs i started her up and she ran great until she “ran out of gas.” The thing is there is fuel in the tank and pump supplies adequate pressure considering i converted to electric and so i just need to find out which to tune first, timing? Or carbs? And when i tune the carbs how do i do it? I have an air meter for them but i have no idea if my mixture is stoich or not