Did my first string change on the D-25 today (last one was done in the shop). The pins in the bridge were/are original and over the years have taken on some "interesting" shapes. I happened to have an extra set of pins (tusq) that were supposed to into another guitar, but I never got around to putting in. I dropped them in, and they were a perfect fit. Can't tell if it makes a bit of difference sound wise....because hey, fresh strings, but the look is nice.