Page 10 in the Bing manual goes into this in depth with a formula and chart for temp and elevation.
In short it says to compensate with the idle mix screw as SS says and then adj. the main jet.
Then it provides this example:
- Motor is well tuned in Galveston, TX (elev. 7') at 86 degrees; going to Denver, CO (elev. 5250') at 50 degrees would be roughly the same with a 145 main jet. If the temp was 86 degrees in Denver you'd go to a 142.
Much like the feedback already provided.