hey just a quick houdini question. super new to pins. played houdini once and loved it. When I was playing and the ball hit the bumper top chain things it felt different... like the whole machine was like vibrating or something, it felt so cool.... was this like a shaker mod that was installed or do they all come that way, or did I imagine the whole thing? and if i didnt imagine the whole thing do other machine do this same vibrating thing or whatever it was?