Was the servo under a bind from something? Cause sitting still it will try to center the tires and it is hard to move on a surface when you not moving. you would need a voltage checker to see if it is over voltage.
Peace!
Country
Help support the
Rc-Monster Buy here
Hey jhautz, here's what I would do:
-check if the UBEC is really giving 6V
-make sure the servos are not fighting each other.
If you are sure on the voltage, and the servo centers are fine, then disconnect the servos from the steering assembly and try if you still have the same problem. If yes, you might just have a bad servo. Would be a good opportunity to upgrade to a single servo.