Purchased this 78 (27,000 mi) from California in late November, I live in Oklahoma City and haven't driven it much do to poor weather. On the few occassions I have driven there is slight hesitation (not stalling) when initially pressing on the gas. I checked the obvious stuff ie: plugs, air cleaner, wires etc...I'm not a mechanic but a friend had mentioned the carburator might need adjustment because of the change in climate and elevation? Any truth to that and without really screwing it up, how do you do it? Thanks for the help in advance.