I finished mowing last year with my 10' pull behind rotary cutter last year and it did fine. This year I started cutting and I thought there was something wrong with the cutter. Every pass I would leave a stream of pushed over grass that did not get cut. I tried every direction, every speed, and nothing helped. I looked at my blades and they looked good, and deck was very clean. Because of the 10' cut, every pass all four tires are in uncut grass. So as I paid closer attention, I observed that the tires were pushing the grass down, and it was not springing back up. Because there is absolutely no difference in my equipment since last fall when I was cutting to this spring, I came to the conclusion it must be the conditions. In thinking about last year, we got a lot of rain and I usually cut grass when it was a little wet or damp. This year it is bone dry. Even water holes, low places are dry this year that I have never seen dry before. So, I concluded it was the dryness of the grass. To test my theory, I am going to cut the next chance I get when the grass is damp and see if this makes a difference. It is very frustrating because it turns my 10' cutter into a 5' cutter becasue I have to overlap next time around. With 250 acres to mow (if I don't cut any hay) thats not good.