Lamp adjusters query

[Bollycerb]

Hi All. I'm converting my Cerb headlights to the projector style and have a quick question about the positioning of the screw adjusters- the lamps have 4 mounting points and are supplied with 3 adjusters. From the back, pls could anyone advise which three holes i should put them? I'm guessing the wing-side two and the lower bonnet side ?
Many thanks in advance
Simon.