Thanks for telling me about he screw retainers, never would've noticed. The thing was that the "lip" of the bumper has little ribs right where the frame of the euros needed to go. I simply shaved off only the section of the ribs that were in the way and the frames slipped in quite nicely. Now I just need to go searching at the junkyard for a couple more adjusters so I can get the two inner lights in. Right now I only have the turns and large lights installed

I used the adjusters from the stock lights to replace my missing ones.
Sorry, don't have any pics of what was wrong
