I may be selling my Carlton 4400-4 if I get a tracked model. It is a 43hp machine with 800 hours ,greenteeth, it has a new drive motor ,new hydro pump with more pressure and volume, also installed a hydro oil cooler as the new models have to keep that oil cooler now its under more pressure. .It has the extending toungue which is great to get unstuck and isnt on the newer models of this size. It's a great machine but I'm in the mountains and need to be positive about where and how I can manuveur on very steep slopes. Pm me in your interested. I havent decided for sure yet but can promise if I do sell it's a great machine and unreal how fast it grinds.