Screen calibration on Holux GPSmile 52+ w/CE 4.2

I have a Holux GPSmile 52+ GPS unit which runs Win CE .NET 4.2. Somehow, the screen calibration on this device kept getting worse and worse each time the device was restarted, to the point where it is not even usable now. I think I tried running an app which needed GAPI, and that somehow started the entire issue. No matter where I push on the screen, the cursor is always on the left 1/8th portion of the screen, as if the scaling is messed up or something. Vertically it seems ok, but horizontally it is totally screwed. I can access the device via Activesync, and can get into the registry to play with the calibrationdata key, but cannot get the registry changes to save when the device restarts. Is there any way at all to accomplish this?

Any help is appreciated. Thanks