Hi, im 15 years old, and i just bought a Pearl P122TWC power shifter double bass pedal, and i can't seem to get a good rhythm on it. im too used to using a single pedal. its my left foot im having trouble with, are theyre any exercises that i can do to get my left foot, and leg muscle(s) used to the pedal? everytime i try to get a good double bass rhythm, the feet either hit the pedal at the same time or the left foot hesitates, and makes an off-beat sound. any help would be really nice