Originally posted by Mutly
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If you need 1/3 of a tooth different then rotate the one that needs drilling 1/3 of a tooth in the direction required then clamp the two together in the vice and use a dot punch to mark the spot where you need to drill the holes.
Take great care and think about the way the sprocket is going to be bolted to the cam as it is very easy to end up going the wrong way, then you have to weld up the holes and start again. No prizes for guessing how I found this out

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