USB HID in DEVO7E

The USB HID Joystick interface seems to work, but I have a problem. (Devo7E, version 4.01)
The range of raw channel values (as they appear during calibration in windows 7) are from -100 to +100.
In case of a Logitech joystick the raw values range is 0 to 255.
While the channels seem OK in the Test view, the bars follow the channels, the calibration procedure fails, the bar just flickers.

Unfortunately the simulator program I like to use (FPVFreerun) can't handle these values, the controls are jumping, the negative value obviously out of range, the input waits for 0...255 range and not -100...+100.

I am not sure if I missed somethig, there is a possibility to control the range, I need a driver, or it's a bug etc.
Please, help...

Simple fix:
For all channels, assign a 3 point curve. Point 1 0, Point 2 +50, Point 3 +100.
It'll work fine then.

Thank you, it is working.