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Roger Miller

Finally got out to the trailer and got into the carb – pilot we use is a 60 and the needle is a DGH

And we have never messed with either at any track from sea level to Miller Motorsports park.  Not to say that is always golden, but it has been reliable and given me good tuning indications on the main jet.  Perhaps more extended time at higher altitude, I might try a leaner needle, or try a 58 pilot and see what changes.  At most though, maybe moving the clip up one slot might all that is needed to correct a mid richness or something.