I am a long time fan of the 4/4 Spiro Mitts and always seem to come back to them after trying out other types of strings. The set I have, though, is getting old. The E and A still have some life but the D and G in particular are coming up on 10 years and have some serious wear on the peg-end silks and windings. My bass is a large-bodied 3/4 with a mensure of 105 cm and I'm wondering if there would be any advantages to trying the 3/4 weich set over the 4/4 mediums. Anyone have a comparison of these two sets specificially they'd like to share? Also, for tension measurement purposes, what scale length does Thomastik use to measure their 3/4 strings?