I probably worded the previous post wrong, the cut I am getting is like cutting too deep at times in places, but will be only around four inches wide, seems like some time when I make a sharp cut, backing up, on a slope, doesn't do it as bad when on smooth ground but very noticeable when it does.
looks like you were mowing and then took a weed eater and cut a swath out where you had cut and I think it is usually on the right side of the mower where it digs in.