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Message: [QUOTE="Blue Thunder, post: 210581, member: 21032"] Grab a stopwatch and click it when you twist the throttle and click again when you see the squirt stop. Time the duration down to .3 to .5 range. Do this with the throat of the carb away from the jug and stuff a rag so the fuel just goes into the rag. There is also a screw for timing up above the new screw that you will drill and tap for. Once you have completed the mod, take the bike out and do some testing, if you are getting a bog or hesitation, adjust the timing screw in 1/4 turn increments. Jetting..I went 1 richer on the needle clip and bumped my main to a 165-168 depending on temps. Your fuel screw becomes a big player here also, tweak on that to get the response fine tuned to your right hand. Good luck, Jason [/QUOTE]