On the next set I'm starting here within a few days I'm eliminating the chrome ring inside completely, have some steel and rubber washers to seal the back of the light. Eliminating it completely will allow the projector to have the side to side and up and down adjustment to lock them down much better. It's all about how much you want to mess with them really. with the projectors sitting straight forward and with rubber pads under the bottom of the projector housing you should be looking at a perfected set. Mounting them like this will allow you to use your adjusters to dial them in. If you just mount the projectors in half ass you'll have your adjusters cranked all the way up making the corner and headlight look very bad.