"Factory" settings would be rich at this altitude.
Why does everybody get so hung up on "factory" settings? They are a suggested starting point. You set the needles to whatever it takes to run the very best it can.
Your carb was built in Japan, Singapore or Mexico, the engine in Japan. They got no idea about a CO. summer with adensity altitude of 10,000 ft
Learn to adjust you will have to change from winter to summer setting 2x a year.
I usually go 1 turn rich from the factory setting, that way I know I have to lean it out, then its run twek, run, tweek, Till its right, 1/8 turns on the needles.
After practice you can do it easily....so practice.