My wife's 100 suddenly started running rough at a redlight. After an hour or so of changing plugs I realized (through mud) that it was a coil issue. RHT had one in stock and it fixed the problem immediately. Has anyone else had this problem with a 100series? I'm wondering if this problem will continue over time as each cylinder has its' own coil and they are $68 w/ club discount! BTW, it has 148K on the odometer and this is the FIRST problem we've ever had w/ it, knock-on-wood.