cool skow. I like the design. Lots of architectural interest. I think the majority of your pitch issue can be resolved if you shorten the top roof ridge height to match that of the previous floors. That will bring the pitch to the same degree, if not, pretty close. The pitch of a roof does vary in most buildings to some degree, so if its not exact, you'll be ok. Would you mind posting up picks of what you have so far?

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