Headlight beam positioners

[Per]

I have a problem with both headlights on my S3. The white plastic thingy that is used to manually position the light beam is broken on both headlights and despite hours of intensive searching through ePer I'm unable to locate an original replacement. Searches on the web for a used replacement has so far also come up without result. So does anyone know if this part can be ordered seperately or do I have to order the complete headlight? Or does anyone have a couple of them for sale ?