farmall cub clutch won't work properly!

I needed to replace parts in the clutch of my cub during restoration, as the clutch was not working at all when I bought it. I separated the tractor and installed all new parts, then put it all back together. When I first started it up, the clutch worked fine and I could shift to all the gears with no problems. However, when I first drove the tractor, I could no longer shift gears.

I can start the tractor in gear, and it doesn't lurch forward at all. Plus, if I am driving the tractor on level ground and push in the clutch pedal, the tractor stops. However, if I try to shift to another gear with the engine still running, there is grinding and it won't shift.

I asked a neighbor of mine who also has a cub, and he said that he's had the same problem with his cub ever since he replaced clutch parts over 8 years ago, and he just shuts off his tractor to shift gears.

I don't want to have to take this to a shop to have it fixed, but I'm a relative novice when it comes to this stuff. This is my second tractor restoration, but the first one went to a shop for transmission and clutch work. I spent some time today reaching up through the access hole to verify the torque on the bolts and adjust the free travel in the release bearing, but to no avail.

Anyone have any suggestions as to what I could try, or what the problem might be?

Sometimes the input shaft from the trans will stick in the flywheel pilot bearing just enough to cause this problem. Even though you have the clutch pushed in the hold from the pilot bearing is still letting the trans turn some.. Look up inside and note if the shaft is still turning with clutch in and motor running...