Seven,
I have the same 224 as you, exception is I have the Koyker(Pronounced Quaker) Don't ask me why its pronounced that way. Well, the Koyker does have a greater lift capacity and much finer control than the ZL-20 but you just can't exceed the limitations of the tractor itself. We are talking a machine that weighs 3K trying to lift 1.5K???? that is insane. Sure it might lift it a few inches off the ground but thats all I'd try. I've lifted a bunch of stone and moved it (about 800 lbs) but very carefully. It would lift much more but why abuse it and safety is a major factor. 3 trips "safe", outweighs 2 trips "unsafe".