Motors only work in one direction

OK, At first my motors weren’t responding. I checked all the connections, ran the motor test a few times, checked again. Ran the test again. Right motor passed both directions, left motor failed. Left motor passed both directions, right motor failed. Now both motors pass in direction 1 (tightening) but fail in direction 2 (slackening).

That sort of intermittent problem is usually a loose connection. I know you’ve already been over all the connections, but that is where I would still look.

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