Oh cool, multiple stations all within 1/2 mile, that's really nice for calibration references.
Well, Now that you've got the pressure mirroring the rising and and falling, and you now understand the reporting differences, it should be pretty simple from here on out.
One tip i read, (not sure where, it may have been on this forum even) when calibrating the pressure, to avoid over compensating don't make frequent large changes. Instead, make smaller ones and wait awhile before making another adjustment. Unless of course you know its WAY off.