Such an excellent mod, thanks for posting! The large triangle brace alone produced a measurable difference in squareness of the z axis to the base/ frame. Printing the front/ top pieces now. That being said I was rather happy with the squareness of the printer before this mod, but after is is spot on with my try square. If not abundantly clear, split this print up into two or three! Keep the pieces low and flat so you can get the best finish on them, and then when everything is assembled you can do your 10+" vertical prints with peace of mind. The pieces are very well designed and are worth a good deal more than the material they're made out of - hard to ask for more.