Method employing a supported metallocene catalyst composition in the production of an isotactic ethylene propylene co-polymer. The operations can include receiving, over a first network, a playlist identifier that identifies a playlist, where the playlist is associated with a first group of lighting commands for presenting lighting effects on lighting devices in the wagering game system. The IC apparatus may further include one or more transducers situated on the first major side of the substrate; and an attenuation pattern formed in at least one of the second major side and one or more of the edges of the substrate. Due to the different coefficients of thermal expansion of chamber and post, when they are heated simultaneously, the chamber expands more than the post, creating a natural tension along post which results in a near perfectly straight shaft.