Thanks for the information. I went ahead and replaced the ring gear with a used one in very good condition. Now the crankshaft position sensor is pushing against it (my old ring gear had some decent wear and this new one does not have much). It's so tight against it, I cannot even turn my crank by hand. When I removed it, my crank turns fine. Will the position sensor "wear down" to accommodate the thicker new ring gear? I do not see any way to adjust the position of the sensor. Thanks.