Thank you for sending the screenshots across.
I've seen the screenshots and see what the issue is. Would you be able to please send this model to firstname.lastname@example.org
so I can have a further look into the issue?
In the interim, what I would recommend doing is manually editing the roof. To do this, left click into the roof group until you get to the base geometry (blue dotted hatching on the faces), then draw lines where the faces intersect along the ridge. Please note that any manual edits will be reverted if the roof is edited using a PlusSpec tool, so we recommend to only make manual edits when no further changes will be done.