If I remember correctly the 2500 has a gvw of 8500 pounds. The safe load capacity is 8500 minus travelling weight. Greg correctly pointed out that's all fuel, clothes, people, stuff, junk and miscellaneous that's going to be in it while hauling freight. Scale it that way and do the arithmetic. If you are correct about the 3011 that would be minus your weight, anybody else's weight, fuel, clothes, stuff, junk and miscellaneous so you probably are looking at a safe load of no more than 2500 pounds. Anything above the 3011 or whatever number the factory gives would be unsafe regardless and even that isn't safe unless you and all your gear are weightless.