Hard shifting sometimes girding when shifting in reverse.

I have a 91 four-speed manual. I think it is acting like I am not putting
the clutch down far enough. I can not find any adjustment to allow the
clutch to engage soon. The clutch needs to be near the floor before it
engages.
What I have noticed is that I can shift no problems when the motor is not
running.
Any help is appreciated.
Kevin