84 full size. Mechanical clutch. One year old clutch, PP and bearing. Start up in the AM, shifts fine. Stop and go traffic, come to a red light and shift into netural.... light turns green and I have to "fight/use force to shift into gear." If I am driving along and want to down shift coming to a stop, shifts into gear with no problems. In the past 5 years, I have installed three clutches. Not many miles between changes. Still, what's causing the hard shifting? Also, when going down hill in first, just coasting down hill, first gear pops out. Cause? New linkage, new "Z" bar, bushings, pivot bar, clutch fork. I have a heavy duty spring attached to the clutch fork facing forward attached to the frame rail. Also... I have a chance to pick up an 85 K5 diesel with auto. I'm thinking about swapping the transmission I have for the auto. This 85 has been sitting for 13 years in the bone yard along with 50 other K5's here in Korea. A local bone yard buys the surplus vehicles from the military. Problem is, the locals won't but them from the bone yard so he is stuck with 50 K5's/M1009's.