My 56' Ford Victory 292 has a teapot carb which was rebuilt in Georgia and I live in New Mexico, which is approximately 5500 ft above sea level.  The car runs really well, but it seems that the carb is hesitating when first starting to drive down the street.  Once it gets to around 65 - 70 it runs perfect.  Should I have the jets changed?  Any help would be appreciated.