I have an Arisaka t38 rifle with minor surface rust. I was wondering what is the best way to remove this without removing the bluing? It is a Serial # 1,902,xxx the stock is a little beat up but all of the numbers match including the stock. the front sights are early without the "ears", the rear flip up sight is ranged out to 2400M. All of the markings are intact and I have the bayonet and a sheath, both in very good condition for $200.00. I am thinking that I got a steal because it is Mechanically in very good condition. Just want to remove some light surface rust. Any thoughts?