All of our refurbished Panasonic AG1980s now have our proprietary designed K-GRIP™ thread motors installed. The new K-GRIP™ design solves many of the threading problems that were previously associated with the original thread motor. The K-GRIP™ gives a strong, direct transfer of power throughout the threading mechanism. If you're sending in a Panasonic AG1980 for repair, we now install the K-GRIP™ thread motor upgrade during the repair process.