I don't use it often during operation of the equipment (like those that talk about continuously needing to adjust tilt for grading) but I use it when I hook/unhook, make occasional operating adjustments, etc. It doesn't matter which equipment I use it on (whether just being dragged like a grader box or mowing with PTO use) it will creep the same amount. I think the link has become looser as I use the tractor, most of the time with 3 pt mounted equipment (about 600 hours on tractor). The locking nut stays in one location and the adjuster cycles away from it. I had the same problem on an old tractor that had the crank handle type adjuster but that was easily fixed with a piece of twine holding the crank handle in place (you could tie it to the upper lift arm so the whole thing would raise/lower in unison). I would think the wire solution would twist itself on tight with the adjuster's rotational effort. I think I am going to try the lock washer next (never thought of that till someone suggested it) and see if that helps. I don't mind dragging out a reasonable side wrench to lock it in place but there is not place to use a regular wrench on the adjuster itself and it needs to be a pipe wrench to get a good grip. then with the pressure I must apply it will really start to mark the adjuster up....