I just purchased an electronic kit, and am interested in buying a double pedal for it. Im not sure if they require a certain type that has a smaller beater, or seomething with a softer beater, but i dont want to spend 100+ on a new pedal if its either too big for the small bass pad or if its not the right thing. Are all of them the same size for the beater and made out of the same material? in other words, If I just buy a double bass pedal, am I sure its going to work (if the kit is confirmed to work with double bass pedals)