I did a Makepat CID#1245 to get a floor stanchion. The top end looks like it wants to be snapped to the centerline of pipe, and is not stretchable. The base plate end is stretchable, but when I grab the grip, and pull it down (negative z) to snap to the slab, the rod length shortens and moves up (positive z). It's like all the Z values are inverted because it's a "hanger" but flipped upside down? What am I doing wrong here?