I moved my z down two flights of stairs, during which it wound up on its back once, and at 45 degree angles several times. The carriage was locked with the orange bits I saved from unpacking. It was transported in below freezing weather across town in a van, set on an icy loading dock for a few minutes, and wound up inside shortly thereafter to be reassembled on its stand and ignored for most of a week. Turned it on, ran a print head alignment just in case, loaded up some canvas, and ran off a print for a desperate (and soon very pleased) client with no problems whatsoever. Now it's under a tarp again while I build a spraybooth.
Nice sturdy machine. Good job, HP.
... I only wish my back was as sturdy.