Cayenne Head lamps 2005 MY.

[E30M3SE]

Is it possible to flatten the headlamp beam pattern on 2005 MY Cayennes fitted with Bi-Xenon headlamp (with corner lights if that makes a difference) other than sticking beam deflectors to the outside of the headlamp lens?

I've had a headlamp out and removed the rear cover and can't see anything obvious that allows this, couldn't see anything in the owners manual either.

TIA.