STR Sears Tower Help Needed

[rack776]

Hey guys, I started to finally assemble some of my buildings after
printing them out last year.

I had some good results so far with STR's original designs but ran into
a snag on 40 wall street, I took a break from it to try the Sears Tower
figuring it was all "boxes" it would go a little easier.

My problem is with the Main top center section of the tower "the roof Top"
I was very careful to score & bend right on his lines but I can not
get the centerpart of the roof top to be "square" to the base, I also
cannot get the "sides" of the top to match up with out some gaps,

Anyone else have trouble like this? I rechecked the printing scale,
and tried thinner card stock, I might have to "cover up" the gaps
with some strips of printed paper.

Am I being too picky about the finished result? How do your guys
models look when done? any gaps or slightly misaligned parts?

I'm a perfectionist so this is driving me crazy.
I wish Nightfly would publish some more designs, I like the
large scale he works in much better.

Thanks for any ideas on how to fix it or when to say it's "good enugh"

[skyscraperlover9595]

print one from skyscrapermodels.us and one from archif.com or somthing like that. then use the bottom from skyscraper models and the top from archif

[Pianoscience]

Before you print it make sure that the main rectangular part is the same size as the upper part of the building. That's why the squares are there.