Equalizer responded today. Confirmed what I think we've now concluded, which is they are designed to move and contour to the ground (just many of us never noticed, as it's not obvious when fully retracted or seated on ground).They told me to tighten with impactdrill, but it would not tighten any further. Newmar just serviced the jacks and said they were fine.
Also, he said while more than likely they are also tight, to be sure, he said it wouldn't hurt to hit each with an impact drill and a 1/2" hex bit to confirm they are tight.
So, at least we got consistent info.