if you look at the picture you can see like a line left in the grass. You can see it more noticeable on the green stripe towards the left side of the cut about 8 inches from the tire mark. I have changed blades 3 times. Speed does not matter. height of the deck does not matter i tried to adjust the front baffle that did nothing. I am at a loss. Deck is not bent or anything as I swapped to a spare deck i have and its still doing the same thing.