Due to fraying of the A string, I have restrung one of my ukes recently, again using Worth Clear, and the A string is starting to fray already. Now in a different spot, right in between the sixth and seventh fret, so this clearly isn't a problem of sharp frets or fingernails. As I have no fraying with other sets of Worth Clear (and never had it with Worth Brown), I really think that this is getting hit or miss. Which is a shame, because I really like the sound and feel of these strings.