I have a 33" Yard Cruiser, I am the original owner, it has ran, and mowed perfect until this year. Every so often while mowing I have blades of grass standing back up, I have even tried mowing half a swath to see if that will help, it doesn't. I have an in law with the same deck on a newer zero turn, and does the exact same thing. New blade has been installed, deck has been adjusted. I don't know if the blade speed is slowing down, anyone have this problem before?