I have heard a few people playing with springs in an attempt to do the same as drilling the slide that is increase throttle response. I haven't heard anyone that had any luck doing it but I know that was thier intention.

In my opinion if you cut 1 then cut the other. If you don't I would think 1 slide would be moving differently than the other. If it was my bike I would try and get a new one that isn't cut.

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