OK, another question. During idle the stepper motor is constantly moving the needle in and out adjusting the mixture to the point of nearly stalling and back again. Could this be the result of a bad O2 sensor? Also I have a couple of vacuum ports on the carb that are not connected to anything, one is blocked and two are open. Where can I get a schematic of this carb (carter).
Thanks in advance, everyone here has been a tremendous help.