[jhv48]

Ed, the clutch was our first thought.

Insulated the clutch lines from heat.
Replaced slave cylinder just in case.
Changed fluid to high temp fluid.
Measured and checked over and over. Not dragging at all when hot or cold. Disengages completely about 1 1/2 inches from the floor.

Elmariachi, I hope they miked both the end of the input shaft and the inside of the bearing. Not sure, as the trans is already back in the car. Neither the bearing or the shaft show any signs of abnormal wear, yet, when the bearing is replaced, the trans shifts like new for about 1500 miles. Then the old problems return. Something is not lining up properly and causing the input shaft to drag slightly after a period of time.

We're all stumped! All parts, from the crank to the trans have been measured and dialed in and all are within manufacturers specs. We replaced the bell housing just for insurance. Don't want to do this a fourth time.