main jet is 162, pilot is 58 and the needle clip was on the 2nd from the top
That should be right for hot mid-summer temps, if your below 70* though take it to 165 , 60-62 pilot. I'm betting its been as cold there as it is here & it's probably pretty hard starting. The 62 pilot where its as cold as it is & maybe even 168 , I know that doesnt seem right at elevation but... colder air is the factor.
I ride the elevation you are talking about, You're really trying to hit a happy medium cause your running such a spread of jetting ranges. There's a nice riding spot uphill from me @ about 6500 ft that I can dial in for there & then go up to 10,500 & tell how close I am. You'll be a complete pig up at 10,500 if your too rich at 6500. At 10-11000 all your going to get is the ability to run at the edge of piggyness. It'll clean out & wont leave you fouling , but if you make it run sweet up high you'll be too lean when your lower. From the 6500 ft "good" baseline you'll feel a slight loss at about 9000 but it will still be rideable up to 11,000, thats as high as I go anyway & it's just crossing over a ridgeline for a mile or 3. My opinion is as you go up the air does cool which helps the spread.
It does sound like a compression test is in order though.