Hi there brian, In the thread below, you can see the problems I have had with my exmark leaving weird "streaks". I levelled the deck, and if you look straight down the mower path, you can still see it, but they are just a bit wider, and not as defined, but you can still see it. I think that the blade change from wavy mulchers, to notched high lifts helped a lot. it cuts fine on grasses that won't stripe at all, and as you can see from the pic, it cuts the kyllinga great. http://www.lawnsite.com/showthread.php?t=122314 do you have any more recomendations I can do to get this thing cutting up to par? thanks.