I'm not sure if this is just related to the Z axis thread, but I've noticed I am losing about .5mm of height on all prints. I have very good adhesion to the bed, but the first layer always "squashes" out a little and maybe that is why the height is off? I'm just doing 10mm cubes for testing right now and the sides of the cubes are 9.8-9.9mm while the top to bottom is 9.4-9.5mm. Maybe that is within the margin of error? As an aside, I did tests using Simplify3D, Mattercontrol and Cura. Mattercontrol actually ended with a 9.7mm height and the cleanest print, while Simplify3D had a 9.4mm height and the choppiest print. Not a great indicator of what the program does and I'm sure it is just settings.