I started off sim racing using my right leg only (as I do in a normal car). As I learned more about sim racing, it was recommended to use the left leg to brake. My pedal set has a clutch on the left, brake in the middle, and accelerator on the right. Using the left leg in the middle was awkedge and was causing knee pain. I saw someone on Youtube who had a medal plate connecting the brake and clutch. I decided I could do better and designed a perfect integration.