Spent a bit of time with my +printrbot Smalls today. Gave it a more stable base to stand on. https://www.thingiverse.com/thing:2846332
The extended (heated) bed option puts too much mass away from the printer and it tilts / tips over and the end of the bed drags on the bench/table/whatever the printer is on.
I still haven’t got up the nerve to reflash the firmware and so, it hasn’t done much printing. (The bed leveling/probing 3 point plane is inaccurate and causes the head to crash in one corner).