Dual carb 650

Location
PNW
My buddy has a sn 650 that has a protec pipe and ported head... He was running a single 44 carb but we had a set of dual 38s laying around so he put them on with a protec manifold and aftermarket arrestors. Protec recommended 107.5 mains, 65 lows and 2.0 needles with 80 gram springs...

With these settings the ski is fouling the plugs so I'm sure we need to go down a size or two in jets but I'm not sure about the needle size? Does anyone have any jetting info on dual carb 650s? Couldn't find any in the carb tuning database thread

Thanks
Mike
 
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