It's all down to how they are fitted as to where they sit.
With the hangers (the rods that hold the end section in place) there's room for movement in every direction and the end section can be moved in an out front the central section a bit so you can have the tips flush with the rear valance or proud, what ever you fancy.
My old standard Zorst and how the tips looked...
And with my BCS system in place.....