When pto engaged the 3 point arms go up regardless of control lever position, engine and pump both labor until pto disengaged. Pulled the inspection cover and moved the touch control lever back and fourth and only get 1/8 inch movement of the control arm. I can grasp the control arm and move it left and right with some resistance. I move my hand up towards the top cover but can only find a burr which cut me twice between the fingers. Will top cover need to be pulled next or is there another way to inspect the linkage? No water in hydraulic oil, leak down has always been several weeks.