For the amount of money neded to tear it down, strip and re-plate, you might want to consider selling the one you have and buying a btter condition one.
I am noticing this with several MR sabers that came out later in production in MR's history. Seems quality control may have taken a hit as MR grew and expanded. The best thing you can do is keep a polishiong cloth and make sure any finger prints or foriegn contamination on the plating is cleaned off or it does corrode at a faster rate.