My older Greensking IV doesn't have adjustable rear rollers. If yours does you need to make sure to use a height gauge with 2 screws on it, one lips the front of the bed knife, the other touches the bottom rear of the bedknife. If you set the front and back screws of the height gauge to fit one side of your cutting unit then just use the height gauge to set the rest. Hope this doesn't have you confused. As you adjust your rear rollers you might have to adjust the front rollers too. Post more ? if this doesn't help.
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