I bought the Z930M recently and have 8 hours on the meter, roughly 5 times mowing my lawn. We mow on either 1.75 or 2.0. the deck has a mulch kit installed and we mow every other day. I did the 8 hour oil change yesterday and looked under the deck, what i found gave me instant buyers remorse, grass clippings so thick they were almost touching the blades. I scraped roughly a half of a 50 gal garbage worth of wet grass out from the 60inch deck. My old toro did this and it was the main reason we got rid of it, plus from what i researched the 930M was supposed to have the best deck in the industry! The mower is leaving chunks of grass in the lawn and now I have to hear from my wife as to why a 10K$ mower would do this? Thoughts?