I have a client that I have been doing for a few years. I have a Tiger cub 48". I have 2 problems on this lawn, the first the front yard is so thick that the grass comes out in clumps. I put a mulching kit on that works well, but the deck plugs up after and needs to be scrapped along with how slow you need to go with the kit. Second problem is the back yard. There is a hill and a lake. The hill is not reall steep, but it is large. I never really had a large issue on the tiger cub with sliding on the hill. The bank of the lake is tricky. You need to concentrate in order not to slide in. This week, the scag failed and I have been looking for a replacement. The dealer loaned me a gravely 260. First impresssions were very favorable. After mowing a little, I noticed, the grass starting to clump and leaving clumps. On the back hill, I could not stop the machine from sliding. no matter how slow i would go down the hill, I would start sliding toward a tree. I did not even attempt the lake shore. Talking with the dealer, he was surprised the grass clumping. Took pictures to show him. the sliding he is suggesting a gravely front mount with bar tires. he is currently looking for a demo. Anyone run into a yard like this.