Hey guys. I purchased a Bobcat 48" WB from my local lawn service company, in the hopes that I could cut my lawn myself. It's three years old and in great condition. Over the past few months, I have noticed that when I cut, my lawn looks worse and worse after each time. Old, brown lawn clippings seem to be drudged up from each cutting, in addition to the new ones being clipped. It has now got to the point where after I cut, certain parts of my lawn are literally covered with a thatch of brown, dead grass. In the end, my lawn looks horrible. A few things about my yard: my house gets sun on the front literally all day, so there tends to be some broadleaf grass (not crabgrass or weeds) interspersed throughout the finer grass. I've kept my grass longer this summer to help it deal with the heat and sun, and once I let it go ten days, and I wound up cutting quite a bit off, so there were tons of clippings. It seems I *still* see these long clippings sitting atop the lawn, some six weeks later. Why are these clippings piling up like this? I would imagine they would eventually decompose (like they do with other lawns), but I have no idea what's going on here. Any advice? Thanks in advance.