I live about 2000ft and I use stock jetting. 48 pilot and ~150 main, air screw is 1 1/2 out I think. This jetting worked for the FMF that it came with and the CT national I put on. My lid is off though and I have a RAD valve which calls for 1 size smaller main. Hope that helps. To tell you the truth I would verify what needle you have because that can make a huge difference.
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