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That’s exactly why I said earlier that it is normal to have the idle a tad rich, precisely to avoid that ‘just off idle’ weakness.


If it’s a steady state weakness (ie if it stays weak when held at that exact throttle opening) then it is most likely the slide cutaway that’s too weak.


But if it’s only a ‘snap’ weakness when opening the throttle, I believe your best bet is a richer idle. 


Using Comnoz’s guide above is, I believe, a tad erroneous as his bike was EFI and therefore had infinite input points. You just don’t have that, so you cannot have the same level of perfection at the cross over points between one carb circuit and the next.


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