Thanks to all responding. Cam shaft timing marks line up horizontally with cam bolt and with copper links, but the crank should be at 40 degrees after TDC; its at 60 (onehundred80). I haven't take off the timing chain cover yet, to confirm, but that's why I think it jumped a tooth at the crank sprocket. There's 120K mile on the engine (ala_xfire). I have never run low on oil, in the 4 years I've owned the car. It was running OK.