Hi. we are using the VictorSPX via PWM. We have encountered a problem in which the motor will spin one direction and then on trying the other direction it status led is idle but is spinning but in intervals. We used a multimeter and found that it was giving 5 to 6 volts when we pressed the button. In addition to this, we have the problem that some motors will work but then suddenly just stop working and will work again randomly. We believe it might be a problem with the PWM to the roborio.