xr 600 carb jetting

I have a 94 Xr600 with an Xr's only Pipe. the current jetting is 65 and 165.

I have adjusted the pilot screw at different spots. But the throttle is still a little jumping at the first opening, it sputters a little. the bike has lots of power just wondering if I go up in the jetting will it tame this? Any thoughts

I have a WB's E2 pipe on my '93 and use a 155 main. It gets a little rich at elevation. I could use a 152 and be fine with that too.

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