One of our customers reported that his Xhorse Dolphin XP008 manual key cutting machine sounds weird when duplicating key.
Here is the possible solution from Xhorse engineer.
1.Unscrew these two screws and take off the belt.
2. Unscrew 5 screws on the shell
3. Unscrew the top screw in this hole.
4. Unscrew the cutter head and you can take out the bearing
5. You can apply some glue on these two bearings, it must be a thin layer.
Install machine again, then try to cut key.