CoolRanch

Believe it or not, I have a 2002 Z28 with manual windows and driver side mirror. I removed the triangular bezel that holds the mirror adjust and it fell apart. I ordered a new one and for some reason, I can't figure out how to put the adjust back into the hole where it will stay. There is a little clip in the hole but I don't want to force it where it will break. Can someone help with this complicated device? I realize I am showing my ignorance but to my credit, a few IEDs in Iraq scrambled my brain a bit.