thinking about it a little more, the other stations, the one's the Gladstones compare with are at different conditions and that there should be pressure differences over different terrain. The Airport is in the Raccoon river basin and the NOAA is near the Saylorville lake area... However, isn't the idea to measure atmospheric changes over a wide area rather than have one standard pressure, regardless of other conditions. That would be like whining that the airport got 2 inches of rain and I didn't get any, therefore I am wrong ?
I am going with my settings and considering three other stations in my house, independent of each other are reporting about the same , I am going to figure that the pressure sensor is fine and let it go from there. If CWOP isn't happy, well that is the data I am sending.