You can see how badly the cooling ABS warped on the base plate, especially on the left. All of the parts, except perhaps the insulating retainer ring at the bottom, have a slight warp to them. I expect most of my ABS prints will suffer from this to one degree or another until I install a heated build platform. But, that’s a project for another day.
In these pictures you can also see the more pronounced effect of the warped Z axis threaded rod, again more prominent on the base plate. The shifted layers occur approximately every 1mm or so. As I’m less concerned with the cosmetic effect on a purely functional piece such as this, I didn’t bother adjusting this Z axis threaded rod until after I finished the prinstruder.