I'm one of these oddballs who likes to set his course setter and directional gyro at the beginning of each flight. It gives me something to do while waiting for the engine to warm up.
I seem to recall mention somewhere around the forums of the fact that the gyro should not actually match the course setter, but should be set something like 10 degrees off to correct for true north/magnetic north divergence? How much and in which direction, higher or lower? I do notice that if I match the gyro to north on the course setter, it does not read correctly compared to my flight path on the map.