Need help finding where an aluminum part goes on PS3 Slim

Hello, I disassembled a play station 3 slim following guides. All i needed to do was clean it inside. The problem on the cleaning process, a small aluminum part jumped which I did not see where did it go when i disassembled. I tried looking everywhere, but I can't find exactly. There are two parts. One which I know goes by the Hard Drive case. and then this other one I can't Find a place for it. I do not know the xact name, i just call it "adjusters". because are those that have a "spring like" function that push back something. etc.

If anyone can help I greatly appreciate

Thanks in advance.