I have owned this sailor king of pen for 4 years now with daily use, throughout the years I have done minor adjustments to the nib and the plating started to wear off gradually (some plating were also removed from the trim due to wear and tear). There were minor scratches on the nib too, so I decided to polish it (using micro jewelry polishing compound). This ended up by removing the whole plating. Is there a way to restore the two tone nib ? How much would it cost, any suggestions ?