Described are methods and apparatuses, including computer program products, for limiting server overload via client control. The side edges of the front panel attach to side edges of the back panel so as to form a sleeve. A copper foil is attached onto a core material formed with electrode pads, wirings, through electrodes, lands and a solder resist. To prevent jamming, a pressure switch senses when oil in a hydraulic motor system for rotating the feed rollers is too high and the controller momentarily reverses the feed rollers and then causes them to go forward, a cycle which can occur several times until the feed rollers are no longer stalled. The at least first, second, and third layers define a compliance less than that of a single layer balloon made of the first polymer material with a wall thickness equal to the combined wall thickness.