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The carburetor is the 29mm BSR. I'm still not sure on the flange/spigot deal though. I am thinking it is the VM29 flange though on that website. I tried looking up stuff on the BSR on Google but I only kept coming back to the Yamaha site where that's all the info they have.
 

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Discussion Starter #3
will having a shorter needle allow more fuel through at wide open throttle? or can that only be fixed by jetting?
 

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Raising the needle which is equivalent to making it shorter lets more fuel through the main jet
 

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dont mess with it!!!!! the needle taper is what lets more fuel in. also
 
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