initial inspection of the flex plate turned up nothing. Of course it's still in the vehicle so I may have missed something. I pulled the oil pan and all the rods look ok, all are still attached and there are no noticeable stray marks on the underside of the engine, no debrie in the oil pan. I'll likely head back to the flexplate and tranny bolts. Anyone know any rough torque specs for this area? If that doesn't turn up anything I'll pull the valve covers.