One might expect that, during the period when new strings are stretching, the thinner strings, having less material* than the thicker strings, but the same tension to support, would stretch faster.
However, this expectation is not born out by my experience. In dealing with new strings, my perception has been that all the strings are about equal in terms of tuning instability. * ie, a smaller cross-sectional area To get on or off this list see list information at http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html
