Gear wheel look-a-like piece left over after iPhone 4 repair.

I was following the fix it to change the power lock button, and when I removed the power lock button, then these two parts fell out. I figured out where the large piece go, but I simply can't find any images that shows a gear wheel look-a-like that I am missing.

I put the phone together and I tried to start it up, however after it showed the black screen with the apple, it never went further. So I am guessing that I need that piece.

(I then took the phone apart, and I was a bit rough with the larger piece and it's loop broke. However that is not the cause of the problems, as the problems were there before I broke it.)

iPhone 4 Power & Lock Button Replacement