KK disc leaves hiil in the middle

[downslope]

You are going to have the small uncut area in the center with a disc harrow, unless, you "double disc". All that means is that you actually step over 1/2 the width you just cut or disc in both directions. Ken Sweet

Ken is correct. You're probably going to disk it several times anyways. When you make the second (or 3rd or more) pass try different offsets, either half the width of the disk, or something else. You may find the best results by running the tractor wheels over the high spot or some other variation.

The length of the top link is important since these disks are kind of rigid and don't have any float built in like older MF and Ford 3-pt disks. Try adjusting the top link so that as you're lowering the disk (on a level spot) the rear blades start to touch the ground just a little before the fronts, then make minor adjustments in the field. I think the other poster had it backwards, as you lengthen the top link the back will dig in more, not less.

You should be able to get it pretty level by making a few offset passes, even without a drag, once you have it adjusted proper.