I wanted to increase the minimum pressure in the compressor, so I looked for the setting screws to do that. I am not sure, but it could be the tall black one that seems to have a plastic head. I gave it about two turns counterclockwise. | I wanted to increase the minimum pressure in the compressor, so I looked for the setting screws to do that. I am not sure, but it could be the tall black one that seems to have a plastic head. I gave it about two turns counterclockwise. |