I have had first hand experience with two of the Evader's stock speed controls going bad. They both first lost reverse and then shortly after that they stopped working completly. I replaced mine with the Mamba Max 7700 system and now I run open stadium.
Today was the official last week of indoor racing, so we did team 30 minute endero racing. We combined all of the classes and ran a nice swooping open track. Very high Speed! For the last endero, I put my Mamba in my TC4 and boy was it fast.
A Very fun afternoon of racing.