Scott W.,
Yes, the A/C at the end of the line definitely played a key role in the receptacle failure. When I replace the rest of them this weekend I'll have a better idea of where the damage is.
I wouldn't doubt that most of them will look as bad, especially kitchen and bath recepts (which, BTW, are fed via GFCI CB's).
GJ,
In one other poster's defense, he only used back-stabs for lightly loaded switches, which would be a little more acceptable. Ironically, the switches weren't back-stabbed in this MH, just the heavier loads...
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