It was the throw-out bearing. I took it out and re-measured everything today and all the measurements said it was OK and I couldn't see anyplace that was rubbing. I had bought a new T/O bearing by cross-referencing the old ones number. The new one is about the same overall length but the length from the fork groove to the face of the bearing was 140 thousandths shorter than the old one. I put the old one back in and it works fine. I thought I had too much free-play anyway.
The T-5 sure makes it more driveable but I miss the nostalgic whine of those old non-synchronized gears.
Thanks to everyone who responded.
