""""Now, throw away the top link and put a chain in there, a little slack.""""
Ralph, I read and re-read and thought about that statement while I cut 2 acres, trying to get a "finish" cut. I just didn't quite get the picture. So, I wound up going over the "uphill" parts of humps in my mowing area sideways to get the hog to cut. I had adjusted the top link to set right in the center of the oval of the top connection frame. That oval is not near enough "slack". On the last 1/100th acre that I had to mow, I loosened the top link all the way ... it surely picked up all the back-slope areas that I was missing before.
Also, many thanks to Soundguy for input on finish mowing with a hog. Specifically, sharpening the blades to a greater extent than for general purpose work. I have an old MTD garden mower/tractor that I sharpen the blades pretty sharp ... I sharpened the hog blades less than I do for the MTD and it made a world of difference. And, thanks to Soundguy for an old thread explaining, in detail, how to use chains to limit the front height of an implement ... a key factor to getting a good cut, with no hang-ups, with a hog. Thanks again to both of you.