Hello Speed and Carl,
The gearshift has never been out, and it was 50 degrees in the middle of the afternoon. I'm sure that it was not frozen. I removed the driveshaft to get it inside. I am going to pull the tranny and check out the clutch when I get a chance.
The truck has not been driven, or even started in over 15 years, so everything has to be checked out anyway. I suspect that you are correct, and I will have to take off the shifter tower.
Thanks for your help.
John