I've put them on my custom build jazz bass, I had the same problem, the top three are real bright and smooth, but my low E is always dead sounding. Not Dead in a good way either. I took the strings off and, in the name of music, sanded down my frets until they were barely there, not quite fretless but not really fretted either. Slapped the strings back on ANNND.....same thing. But on the bright side, slides, walking bass lines, and up the board runs are extremely easy, really mellow, and smooth. Did not fix the pyramids, but did give a new insight to my tone. Long story short. Tried them, wasn't satisfied, tried fixing the problem, still not satisfied. What I ended up doing was getting a Black Diamond pack of flatwounds and stealing the low E. The Black Diamond is bright and punchy and equals out real well with the top three. Moral of the story, DeadHeads make it work. Although I am up for any suggestions on flatwounds that I do not have buy two packs of.