The arm as you called them I set them about 1/8 " . After I check out the other things etc, I double check it again. If they were worn too badly that maybe the only thing not working right as far same the clutch goes. But the throw out bearing that maybe be shot. To change the clutch I would say and 3-4 hours if you don't break any thing. I broke a steering shaft sirport that goes on the frame one time, so take it off. I also had trouble getting the steer u-joint to come off of the shaft.
Good Luck !!