04-04-12: JbuenechI suppose the reason for that might have been static electricity on the plastic sheet, which is a possible issue that I hadn't thought of when I composed my previous responses. Not sure how or if it may be possible to quantify or predict that risk.
I have Kimber 3033 and tried to protect them from dust by wrapping them up in a thin plastic sheet, those used to keep food in the fridge. Result was a huge change in sound for the worst.
Ben, Digikey has a selection of tapes having anti-static properties, which it would probably be a good idea to look through. Under "tape type" select one of the three anti-static entries, and then click "apply filters."
Best regards,
-- Al