Replacing generic RECEPTACLES


How important is it to replace your generic receptacles with audio grade receptacles . I already replaced my stock power cords to high end Shunyatas. Would it still be necessary to still change my generic receptacles to audio grade? 
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Since the subject of vibration through receptacle covers was mentioned, I'd like some advice. The covers on my duplexes are not perfectly flush to the drywall so I'd like to secure them.
  I have two 20A dedicated lines coming from a subpanel, then wired to Hubbell duplexes. I'm using large non-magnetic stainless steel covers which are very rugged.

I want to insulate the inside of the covers to insure a more secure fit. Should I use rubber or Sorbethane, or would there be any benefit in using carbon fiber fabric or tape?
All this talk about buying Oyaide carbon fiber covers has me wondering.


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Hi @elizabeth. I saw your earlier post about Blu-Tack, I didn't realise that you spread the product over the entire duplex cover.
  What's your take on RFI leakage thru the AC receptacle; does this need to be treated? Or is vibration control the only aspect that needs to be addressed? A lot of folks are spending big money on carbon fiber receptacle covers.
Thanks.