Thanks TL. Very helpful. I figured the noise would come from rounding out the holes but wasn't for shure if that was the main concern or if it was prone to gernading. The engine is very quiet. I really don't think the car has been beat up too bad just a little neglected. Once I get the oil changed I will listen more closely to see if I hear any rattle from the SC. Does reving up the engine a little make a difference in checking the SC for noise? If no sound is coming from it I may wait till I do the LIM and stuff to replace the coupler.