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So i have made the home made sync tool and sucsessfully set the carb sync pretty close . Now my question is how do Correctly set the A/F screw settings? is it simply by ear or for best RPM? they are preset at 2.5 turns out just at a starting point right now. bike runs pretty good but im guessing...

so heres my issue. i recently rebuilt carbs , changed plugs and oil. cyncd carbs with a home made monometer. took the bike out and rode great for about 50 miles or so then i ran it hard and got the vboost opened up a few times and then noticed a popping from the right side exhaust but only under...