Originally posted by Boy Weevil:

Hard to tell exactly which pieces I'm seeing here with just that one angle...

You could do a quick n dirty fix though by just placing some angled wooden beams over top of those clipping bits.

just look at the part where it doesn't looks smooth that's what I'm talking about.
the point is the inner corner roofs either 26 or 45 degrees are ugly to look at from the inside.
I'm sorry, I'm not very good at English hope you understand what I mean.