Hi, I've been looking all over the internet but can't seem to find an answer to my question. I have a new MBPr 13inch from the US (8GB RAM, 256GB drive). Now that I'm back in Europe, I want to use my European AC power cord that belonged to my MBA (2008) Magsafe charger, with the new (American) Magsafe 2 charger that came with the new laptop, so I don't have to use an adapter to plug it in. Is this safe? Can I also use the "duckhead" European plug that was on my old Magsafe charger? Thanks!