97 days ago I had my luthier instal GHS Precision flats with totally new pro set-up on this bass. At first I was so completely disappointed that I called GHS in anger. They were the most horrendously unbalanced stringset I had ever played in my entire life! I've been playing bass for 44 years, so Grrrrrr! is a vast understatement. I was ready to rip them off my bass and demand a full refund. The GHS customer service rep told me that they would balance out after about a month of being played in. I was not happy and more than a little leary. If the E-string hadn't have sounded GREAT straight away I wouldn't have given these strings another chance. What follows is my real life experience with GHS Precision Flats on a 1976 Fender Precision bass. They did play in and begin to balance out very slowly. For me it was over two months, or about 100 hours of playing time. Additional tweeks of both string height and pick-up height were also required to bring the stringset into string-to-string volume balance. Fine adjustments are to be expected with any change of string brand even if of the same type & guage. What I have come to Love about GHS Precision Flats: 1) They are very strongly focused on the fundamental tone. Sure there are some over and under tones, but they are subdued and decay quickly leaving the pure tonic tone. I've never experienced this extreme purity of tone with any other string. None. This is reason enough to love them. 2) Smooth - While the strings themselves are super smooth so is the sound. Dark. Focused. Smooth. Intense. They sound as good as Ghiradelli Intense Dark Chocolate tastes. Yes, that good. 3) ATTACK! GHS Precision Flats have an intensely purcussive attack on a thermonuclear scale. If you want to rock a true assault bass, you need these strings. 4) Sustain - Long & Lovely. Pure Fundamental Sustain with smooth slow decay. An earful of joy. 5) Tune - GHS Precision Flats hold their tune better than any string I've ever played. These strings are stable, and I expect them to stay that way for a long time. 6) Tension - Yes, it's high. Flats are higher in tension than rounds, and hex core is higher than round core. No flippy-floppy strings in this set. Just know you're going to need to keep an eye on your neck and that some truss rod tweeks will be needed from time-to-time. All basses need that here and there anyway, so no big deal. And that Bass Bros is why I love GHS Precision Flats.