I bought this SMITH & WESSON .38 SPECIAL Mod. 10-8 .01 no reserv : Revolvers at GunBroker.com off GB and looking at the pics it seems the finish needs a little attention. How is Cold Blue? Does it hold up well? Is it a fairly easy process? I think I got it for a really good price and I sort of bought it for a project gun anyway. Should I just send it to Smith for a re-finish?