Ok.
Also, are you absolutely positive the disc is going in facing to right way?
I have seen them go together fine, but not want to disengage all the way because of this.
I know syncros were mentioned already, and it's a good thought.
But, they don't affect reverse at all and we are supposed to be able to use reverse without it grinding like it doesn't have a clutch.
Hard grinding going into reverse is specifically a clutch disengagement issue or input shaft drag.
How does it act when you start it in gear?
When running in gear then take it out of gear does it kind of thump or feel like it was dragging till it came out of gear?