I completed my first string replacement today on my Kala solid mahogany concert, using D’Addario titanium strings. I watched and rewatched a few “how to” videos. The two biggest challenges were 1) ensuring the string twists at the bridge were going the proper way and 2) getting the slip knot on the tuners set in the right direction. The E string twists are not consistent, but it will have to be ok until the next restringing. The bridge strings ends are tidy for a first attempt. I’m elated at having developed this skill. I know it will be easier next time. I’m only 2+ months into uke ownership (maybe it owns me?). It’s another proud milestone in my uke journey!