Fold the up and the down stop tabs flush to the elevation unit frame. The solid gear will rotate 360 degrees without hard hitting anything that would damage the other gears or itself. Of course, going through a full cycle, up will become down etc, etc and no real skill is required, except you must be able to tell up from down under stress and figure out what to do about it. Pretty sure most can handle that challenge.
Then again, there is dropping in the end-limit switch solution. Solid gearing plus the limit switches, and the switch cuts out when you hit max/min elevation. No strain. And apparently, Impact offers the wiring diagram at NO cost if you e-mail them (or so said the text on the Youtube file I saw...) Anyone tried to get the diagram/instructions?
I'd be game for it, as I have more than one use for it...
Then again, why wouldn't Impact just openly post it on their website as a 'freebie', eh?