Yes that's the servo motor. It can sometimes feel like when someone bumps into you at a stoplight. #12

Although since you're there anyway change the classification resistor and clean all the other contacts putting dielectric grease on before closing everything up. #3

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"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course