Larry I have done a few
actuators add ons, of what you're going to do. the most important thing is keep the actuator pushing straight with the 2 mount locations, an try to weld or bolt strong on you're H to H mount, not to the dish pannels.
Also on another note, have you tryed to fix you're H to H motor, or if you know the maker of it? I have quite a few parts for different 1's here. An I have even took a venture motor off a actuator an have put it on a channel master H to H mount with very little work.
Good Luck...
Captain