Rotate Jacks In Their Mounts To Gain Trailer Clearance?

So, it sounds like I should rotate the power head on the jack, not the entire assembly in the mount. Makes sense. I noticed those screws while reviewing my photo. The motor head screws are above the three set screws I originally considered.
It can't be that easy. It never is. LOL. Maybe, I'll find out tomorrow, because I'm scheduled to depart the day after. Worse case, I don't take the camper off the truck during our trip. It sure would be nice to have those couple of extra inches for clearance.