BK mod

I have seen the pics of the bk mod that motoman393 has, but does anyone have or know where I can get my hands of some STEP BY STEP instructions on how to do the bk mod? When doing the bk mod, do you have to use the stop watch? Also, how much of the throttle stop do I cut off?

This has been coverd xx times in the forum. Do a search on the key words and you will have your answers in no time at all.

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