i can only speak for myself here but,i have used a set of DaDarrio Chromes on the last five basses,even removing and remounting on 2 of them,,and never a problem even when a bass had`lightweight' tuners and i went back to open geared tuners(i DID with one brand;string broke at the tuning peg)
and i've tuned those string flat as well as a full step down and back up to standard=still working great tonally,,i DO have a dif. brand of halfrounds on a P bass and they are great in their own way but i havent swapped em back and forth 6-7 times and beat on em for two years either

,i love those`Chromes'
i think i recall someone else here having a breakage issue with a T-Bird and it was the bridge saddle=?do a search
