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Read all of this mess but I seem to have entirely missed your point, or purpose of this thread at all.
 
Having resigned from AppleCare recently to take up another job in the industry, one that supplies the use of Lenovo ThinkPads,

I sincerely hope that, in your servicing of Lenovo ThinkPads, you do a better job than the bozo who tried to use a high-speed drill to retighten the screws on the bottom plate of my old, dear T40, when I sent it in for warranty work (bad sound card, logic board replacement), then insisted when I complained about it that the numerous deep gouges across the bottom, the stripped screws, and the crack in the replacement board caused by over-tightening were my fault.

Ironically, that's when I decided I'd never get another Lenovo, and for that and other reasons, switched to Apple... while occasionally replacing worn keyboards, fans, and performing HD/memory upgrades to friends' out-of-warranty ThinkPads for cash on the side. :)
 
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