I just bought a new Super Z with a 60" deck. I am very pleased with this unit except for one thing. Everytime I mow I have to remove grass from beneath the deck, it builds up so bad the grass can hardly discharge. It doesn't matter how dry the grass is, it still clumps badly. My last mower was a Woods, I don't think I had to clean out the mower deck more than a few times each season. I can't understand what would cause this. Also, this deck is not easy to get under to clean!!