Have a dk55 with the cab. In the manual it states the full capacity is about 2800lbs for lifting. The problem is, when we attempted to lift about 2,000 lbs, the rear wheels about came up off the ground. They have fluid in them but now we are thinking we need to add a counterweight to the 3 pt hitch when lifting stuff that weighs that much again. How much of the max capacity do people usually use for counter? The manual doesn't say other than a warning to use ballast.