Yes that stupid front piece is always an issue.. and that stupid plastic thing above the processor is a pain in the @$Q#.. It breaks if you screw in the top screws too much.. I loved my 540c... I can't even remember when I sold it... I had gotten the Rev C PCMCIA module at the time.. Since I worked in the Apple tech room I ordered ALL the plastics for it at the time... I had boxes and boxes... I gave them away..  I bought another 540c recently to fix up and rekindle my aspiration for the 500 series.. I saved my NewerTech PPC upgrade board.. Still got it!!! In the box!!!! I found my receipt for it.. like $700.00 at the time!!! So Mike your right you don't see them that often and he's lucky his came with one.. He can get a few bucks for it!!!