I'm making a list of "could be's". Could be:
-warped clutch
-Leaking input shaft seal
-throw out bearing
-power shaft bearing
-syncros (from neighbor transmission guy: First and reverse are the same gear. It slides either direction depending on which direction you want to go. If you have to adjust the clutch to tight that it slips just so the tranny doesn't grind you either need a new power shaft bearing or first gear syncros. I don't think it's the bearing because they get noisy when they go bad. Either way when you tear it down both get changed.)
The dumb 'ol truck has a hydraulic clutch conversion installed. I've put only a few 100 miles on it in less than year and when I got it, it worked fine.
There are no new noises, just the grinding try-to-get-in-gear noise until I adjusted clutch slave until it stopped...
