This coil is on the coin door (duh) on my Gottlieb Sky Jump (1974). It gets really hot when I play. Can someone please tell me what it is and if it should be getting hot? The coin mechs are functional. Also, there appears to be a missing part on the back of the coin door. If a coin is returned it drops straight down and ends up on either side of the base of the door. It seems that there should be a piece to funnel them toward the middle to the coin return flap area. If anyone has whatever is missing here I'd like to buy one. Thanks in advance!