I am replacing servo, radio and receiver so I can run higher than 6 volts, looks like 7.4 volts I think I can run, question is for a 7.4 volt servo I can get a high torque or high speed servo. I would get high speed servo because vehicle is light and doesn't need extra steering torque (or at least I think, I could be wrong) but I am concerned that high speed servo might turn to fast making it difficult to drive/turn. Any thoughts?