Hello, my name is Ted and I just became a new member of this site. I found a lot of useful information here and I was hoping you could help me. I have a 60" Exmark with the 27hp Kohler engine and ultracut deck. I have always been very happy with the machine, but recently it started working in a different manner. When cutting, the pattern shows up with extra lines in the middle. It makes it look very crooked and uneven. It would seem as if the blades are crooked, but the blades are perfectly sharp and straight. I have pictures to help explain what I mean. The pictures were taken when the blades only had a couple of hours on them. Please help me with this... I am pretty lost, because it seems that everything is fine, but the job looks terrible.