Install the sync rod of JZHUpdated 2 years ago
1. Insert the left end of the sync rod fully https://uploads.gorgias.io/gpGJBxpG8y7YXZA5/1-603443d0-68c8-42e2-a1a2-77df76505f3d.mp4(video)
2. Disassemble the right end of the sync rod, reset the motor leg till it bounces back a little bit, and then assemble the right end of the sync rod again.