Whoops! I dropped my 430ex and although it didn't sustain major damage I broke the little red cover of the assist light and the pull out wide angle plastic lens. I ordered both parts from Canon and the red plastic cover was easy to snap on. The other piece is another story.
Can anyone tell me how to get that inserted? I've taken the screws out on the other side but I'm concerned that if I try to remove the back there might be some spring loaded or other complication. I removed the old broken piece. How can I get that new one slotted in there?

