Might be the radio you're using. Some radios have 200 KHz IF filters. This means they're wider than the broadcaster is. This is not a problem in non-congested markets where there is no adjacent or near adjacent station.
Since the broadcaster is only 150 KHz wide (+ and - 75KHz.), it makes since that the receiver be this wide also. From what I can determine, only high end tuners have this specification. Also some FM enthusiasts have modified wide receivers by replacing the filters.
They're less than a dollar a piece and FM tuners typicaly have 2 to 4. If you a DXer you might want to look into this. Do a search on FM ceramic IF filters. Good luck.