Roof pitch transition over porch

[bphil]

Hi there,
I am attempting to extend a bump out further with a covered patio, where the roof changes pitch from 9:12 to 3:12. (The attached pictures describe best what I'm trying to do.) This is really similar in concept to what is described here: http://www.chiefarchitect.com/support/article/KB-00045/. I am able to replicate the KB article easily. However, with the bump out in play, I am unable to achieve the desired roof transition without everything going all "FUBAR" on me.

Is there something simple I'm missing here?

Thanks in advance!