T3 replacement headlamp

The headlamp reflector on my 78 T3 was shot so I bought a replacement Ring 7" light from this lot on fleabay HERE

The unit duly arrived and fits nicely, except that the light has 3 flat loops equally spaced around the rim in place of the screw and captive nut type of arrangement of the old lamp.

So, my Q is, have any of you mocked anything up , or have any suggestions as to allow the adjusters to still work?

Do I just ditch the adjusters and crop the screws, and leave them in place as dummies?
=105113868&filters[recent">=1&sort=1&o=1">As in this piccy here