I thought the jetting might be the issue as well. The only evidence to the contrary is that I get popping with decel whether I am at 11,000 feet or 3,000 feet. It seems that if the issue were being too lean at 3000 feet, that the popping would get better at 11,000 feet. Am I wrong to assume this?
I guess another way to ask this is: when you adjust the oxygen content of the carburetor, i.e., traveling to a higher altitude, does the fuel intake automatically get adjusted as well, or is a lean mixture always lean regardless of the altitude?? Are they dependant or independant variables (for the mathematically geeky out there).