On my (new!) '78 B, it has one of those "features" that reduces the idle
speed when the clutch is depressed, ostensibly to reduce idle emissions (by
reducing idle) while you're sitting with the clutch in at the intersection.
Of course, sitting with your foot on the clutch for minutes on end is not
desirable for other reasons, but the fact remains that the car reduces idle
speed while clutched, if only for a second.
In lesser weather, this is not a good thing (stalling ensues). Is it
appropriate and/or easy to bypass this "feature"? If so, how?