Does anyone know where you can get the rope pinch/brake piece of this equation?. i want a rope pinch/brake on the wall with long leads for high ceilings to go through the pulleys/blocks. 14 foot celings and different points in the room. i am currently using blocks that have brakes, which is fine when you are against the wall, but when you are in the center of the room, the rope dangling down is the problem and if you put the excess rope on the wall, you run the risk of releasing the brake.