Any issue that can be prevented is an issue that won't cost time and money to fix later! With that in mind, let me point you to the new firmware update that was posted this evening:
"Firmware version 4.6r3 is now available for both the HoverflyPRO and HoverflyGPS.
This version corrects a reported issue which can cause the Auto Level feature to perform poorly. While the issue is rare, we strongly recommend that all users upgrade their firmware as soon as possible."