Do re -wired BI wired speaker cables need break in time ?


I have a pair of Cardas Clear Beyond speaker cables that were single wired and I had them sent to Cardas to be internally bi-wired. I just got them back on Friday afternoon and they sound dead and muffled and not what they sounded like before. I can't call Cardas today, but if they went from single to b-wired internally do they need to be broken in - all over again ?  Love these cable and it initially took a long time to break them in . Your thoughts and thank you in advance.  
garebear
Post removed 
My apology fellow members as I should have listed this under cables. My mistake..... 
I remember hearing or reading years ago, that George Cardas had stated that anytime you move or re-position a cable, it will need some time to "settle in". I took that to mean a break in period, I would guess it would not be as long as when new, but let them play for a few hours and listen for any improvement.
The new bi-wiring setup has new connectors---spades or bananas---and they need to break in before you can evaluate the sound quality.  When I change spades, I allow them to break in for 40 hours or so before listening.