What did you end up replacing them with? I have a set of Juggernaut 7's in my Sabre Syren 7 right now & I think the pickup route is just far enough away from the bridge that I can't get a fast, tight response from the low strings without ruining the voicing of all the higher strings. It could also be because I tune to drop Ab and it's a 25.5" scale 7. I currently have it set up with a custom equal tension string gauge set from Stringjoy, I believe .10-.68 or so. So then, here's how the bridge pickup is mounted: With the treble side tilted slightly away from the bridge, I'm thinking either Black Hawks, Painkillers or Nailbombs. The tilt is to help with the high strings from sounding shrill on the bridge pickup, but the Juggernaut was designed to keep them from sounding shrill as well so what I think I'm running into is a bit of overcompensation by combining the two. As for the woods, it's a thin swamp ash body, wenge neck and maple fretboard. Excited to hear your input!