Hi I'm new to the game and have decided I want to build a wooden scalextric track, so far I have bought some stuff to make a start. A 4 power base and pit lane game. My question is can I hook up a different power supply to my base or do I have to purchase a genuine one?. I have seen some digital wood sets on you tube but cant see any of the set ups. My next question is do I have to buy the change over lanes, take the sensor out and install in my track or is there somewhere that sells just the sensor or an after market one?