I recently purchased a Tamiya F103RM car. The servo in it is non-descript; it has no name on it. I think it may be on the way out as it turns the wheels of my car further to the right than to the left. The car has a Novak brushed motor and Airtronics 3PS radio. Can anyone tell me how to determine a replacement servo? Or could it be a radio setting that's off? Thanks.