I've been using Fender strings ever since I got my new Fender jazz. The factory strings were great and lasted well over six months (probably longer if I hadn't wanted a lighter gauge). So I've gone through about four sets of Fender strings, they've all sounded great. But last week I changed them again (with the same exact strings), and today, THEY'RE DEAD! All five of them, nothing but THUD THUD THUD, no sustain at all. So I dug my old set out of the trash can, wiped them off with some isopropyl alcohol, and put them back on. The old set still sounds amazing. Maybe I can squeeze another 6 months out of them So what should I do with these dead strings?