I just got one of the new DIY models... screen is tight, like it should be regardless of the assembly process. But 3 screw holes were misaligned and threw the hole thing out of wack. It was an easy fix, but shouldnt be an issue with a "improved" product.
To this day the best screen cages i own are the penn plax HD cages with the plexiglass fronts. And they are more aesthetically pleasing.