Is there a separate component for the KP joint and the rafter foot? I don't see a line denoting that the timber contains multiple pieces. Each end that needs to do the cutting should be a component within the main 'timber'. These are then denoted as 'TF Make Joint'. When building this component the orientation of the cutting place should coincide with the face of the timber to be cut, as I've sketched in the attached image. You should have 2 (or more) components living within the main 'timber' component.
This is a great guide, if you haven't found it already:
http://tfguild.stores.yahoo.net/tifrdeusgosk.html
