Mcintosh MC501 corner replacements

Could someone show me how to replace the aluminum corners on my MC501's faceplate. I have a copy of the service manual and it doesn't help. I have partial disassembled the amp and I can't see any fasteners for the corners. Thanks!
Audio Classics in Vestal NY should be able to walk you through the process. Good luck!
Didn't you even consider calling Mac's customer service dept.?
Thanks for your responses. I found a video online on how to replace them.