| I wouldn't worry about the neck, unless it was a crack since if you decide to fill this, you'll probably have to refinish or do with a "sticky" or "uneven" spot.
I don't know much about chrome hardware on a bass, but I had a lot of motorcycles. When the chrome is pitted, it usually will stay pited for good, especially if it was a cheap/thin plating. Replating was usually the only option for most mufflers, but that costs a pretty penny for nothing. Now hardware would probably be cheap/ run you the same price.
But if you want the (chrome) parts to look as new as possible, take them off the bass, wash them with a gentle soap and then polish them using a chrome buffing compound. Follow directions carefuly and wipe it ALL off or it'll get gunky in no time. For relisiant spots, I usually used very light steel wool, but that swirls the metal (hey, I only had beaters !), so it should be out for you. |