I've read the posts on setting the metering rod and they are very informative, what I'm wondering is this, what kind of behavior (Motor/Jeep) would be an indicator that the metering rod is not right.  I would guess that there are the very gross indications of a problem, but what are the very subtle indications?  You know the kind that may indicate that the rod is just a little out of whack?

My jeep runs pretty good most of the time, but with all of this RePOP stuff out there I've come to think that a lot of this stuff has to be "adjusted" by a good mechanic to make it "Right" as compared to " OK". 
Todd

Also may run rich at idle and be hard to set the air bleed screw and you may have to close the throttle plate completely if the metering rod doesn't seat on the jet opening.