How can the meter in the FE is more accurate than the FM? If the meter of either is out of calibration then they are off but generally the FM with the LED indicate exposure within 1/5 stop I don't think you can match the needles that well.
How does the FM measure 1/5 stop? How does that work with the 3 LEDs? I have a FM2n and a FE and I would have thought the FE was easier to meter small deviations.