I submitted this issue to Gyration to see what they would say.
Here is the response:
"Hi,
The gyro inside may have deteriorated, so even recalibration doesn't work anymore. There's no fix for that, because it's a hardware failure. Your option is to get another, unfortunately that model is not available from us anymore. You can purchase that from our reseller Cumming & Associates by calling 858-503-1227."