I just installed a CAI system and in the course of doing so I removed the headlight assembly. It was very tight at first but then it came loose. When I tried to put it back it did not seem as tight. I got the tab in the slot on the inside but I can't see one on the corner. Am I missing something or is not as tight after the initial removal?

I went ahead and removed the other one too so I replace the lights with brighter ones. They seem to be pointing at the right level but neither one is as tight as it was originally. Any help would be appreciated.