Weird problem but for some reason I believe that while mowing (flat ground with some slopes) my mulch cover ends up really broken like I hit a rock and shot it thru the thing. Problem is I did not hit a rock and the only thing I can come up with is that somehow the mulch cover spring loaded rubber keeper breaks and allows the cover to go into the blades and get ruined? Wondering if anyone else has seen this occur and can confirm that's what is causing the problem? Appreciate any input thanks.