Gable roof

[build4fun]

Well here i am again.

I think i should start a new thread but can not figure out how to do so. I believe that my problem is unique as i can not find it in any of the treads. I have gotten all of my roofs done and as a final walk around i noticed two thinks. 1 A odd color line around the grabbles of the house. I have tried to eyedrop them and i get the can not color platform error. i made sure all of the alignments are correct and that they do not have some type of funky room specs. the second issue is a gap in my roof (shown below) i am trying to replicate my house and the roof goes all the way to the right exterial wall. i do have a gap (invisable wall) there on the floor plan so that the office will come out further then the rest of the house. I can not figure this out. can anyone help. I hope this tries to explain it, the pics are worth a thousand words. let me know if you need further explaaining.
thank.