Headlight retainer ring - everything is so difficult .....

[6600DURAMAX]

Working on the headlights and need to find replacement rings for a 1972 Chevy 7'' headlight ...... sounds super easy ( I ended up breaking the tab off of one of the originals so it wont lay flat with only the two screws)

Purchased some off ebay/ amazon and they are way to tight of fit in both the inner and outer diameters - I worked on the inner diameter with a dremel for about 20 minutes ( just taking my time) but still cannot get enough clearance to slide around the headlight. Even if I keep working it the outside diameter is way to tight and there is no way to make it larger

Any one find some that non oem that are better and actually fit ?

Such an easy morning turned into a mess...