Hey, I bought my Macbook Pro 15" in New York last year. When back in Europe, I bought the adapter so i could charge it with plug sockets over here. Will it matter buying european charger when laptop was bought in america? Recently i notice i have a small nick/unravelling on the wire on the charger lead where its joined to the charger box itself and have to play with it get the laptop charging. Im wondering is it ok just buy a new charger for it over here and use as normal. How do I know which charger is correct.. Sorry if sounds stupid question, just want to make sure, also if there is anywhere online buy one.