I was working my 753 one day and noted I could not raise the bucket. I kinda jiggled the pedal some and it went up OK. I drove along, raising and lowering the bucket with the left pedal and it was fine. Was this some minor linkage wear problem, like some slop in the pedal mechanism, or a hydraulic problem? Haven't looked at a schematic yet, just wondering what folks think the problem might be. thanks