On my TC-24D New Holland uses turnbuckles. These can in theory should be easy to adjust and allow you to be at infinite positions. But I find that they can sometimes be very difficult to adjuster. It depends on if there is any pressure on the turnbuckles from the attached implement. It also depends on how much dirt and stuff is on the turn buckle. I will spray my turnbuckles down frequently with WD-40 (it is cheap and has decent "pressure") to wash dirt and stuff off the threads of the turnbuckles. I will then take them off probably once a year or so and take them completely part to clean them up. Still there are times that I have to stick a screwdriver in the hole in the turnbuckled to adjust it. This requires quite a bit of time/effort because you can only get a half turn or so because of hitting the tires and other things.