Hi everyone, I play a four string passive Hohner The Jack E-Bass (purchased 1989) which uses a lic. Steinberger System. I need double ball end strings and it seems to me that only GHS is producing them. My problem: the D string seems to be too long, because when I tune it, I really am on the max side with the knob, i.e. I couldn't tune it any higher if I'd like to. I already tried to clean and oil the mechanics: the knob is fine, it's really that it is on the max. Any advice? Thanks.