Does anyone know how to change the polarity on Scalextric sports track to make the cars run the other way?? I have two professor controllers and in the instructions it says the reversing switch system is not for use with scalextric sports. So I cant add them to my controllers. My track is fixed to a board so I don't want to pull up the power straight and swap it around & I don't want to go to the hassle of re-wiring ever car I have. Would it be possible to just cut the leads coming from the wall mount transformers and re connect them the other way around?? Think I am running out of options!!!