For some reason, the Regular Station labels create two labels of the ending station. Toggling on the Omit first and last station works as designed. The initial station only gets one label.
While I'm reporting things, a setting like omit trailing zeros would be nice for many labels. This one area is a good example. the Regular Stations do not need decimal readouts, as they are always at even stations - except for the ending station 99.9% of the time and occasionally for the starting station. These should actually get decimals to whatever precision we desire. So a setting that allows us to exclude trailing zeros but specify decimal precision when non-zero is needed on many labels. And the precision for labels needs to be able to be set within the label tool and not rely on a MicroStation coordinate readout. Similar to how dimension styles work.