Although the CV carb does compensate for altitude you may need to change your pilot jet? As you have gone up in altitude where the air is thinner you are probably running rich and can confirm by pulling the plugs and check for color. Then see what idle jet you have and replace accordingly.

Good source for jets and idle adjustment screw

http://www.harley-performance.com/ha...r-jetting.html

 

You could alternatively seek out a local Indy, who should know exactly what to do and set you right in little more than a few minutes!

 

 

 

I provided a link above where you can get the jets. You may be able to source them from a local Harley dealer as well?

 

Install an AFR gauge and STOP GUESSING!

 

The word 'indy' is a shortened name for an 'independent' Harley specialist. With older bikes, visiting a proper dealer can be expensive, there is also a risk they don't know carbs very well, if at all. Independents are often fully trained older qualified Harley mechanics who can run their own shop by working on our older bikes - they know their stuff, have many skills and are well worth seeking out. Mine is a Harley Master Tech and a great chap - he set up on his own when our local dealer closed. Hope that helps!

 

What you need is Amazon and order AFR gauge.