Motor shaking when clicking move arrows


I just testfired my Maslow on the dining table. Updated firmware and installed groundcontrol - everything works. But when i click the move arrows in groundcontrol both moters move, but one shakes like crazy. What is going on?

Greets Rasmus

Any of the troubleshooting steps in this thread help

**When not connected to a frame mine flopped a few times. I just assumed it was because it wasn’t attached to anything. I should note, everything was smooth when attached to a frame and the sled was hanging