Barrel jacks stink. Mod it out to a Switchcraft old school jack like JLS suggests. Or put a new barrel jack in and replace it again within 5 years, maybe less. They are kind of like a timing belt on the car; change it on a schedule or it will fail when you least can afford it to.
*1962 Jazz. '74ish Ampeg V4B, 115/210. * '75 Gibson G3. *Epi Tbird. *Squier: VM Jazz, CV 50's P. *Squier VM Jazz Assoc. *MBC 641. Squier owners club