I'm back with a new electric oud this time but....my first string (higher one, Gerdaniye or Re) as well as my last (bam teli) doesn't have equal sound
level as the others.....others are much louder. I tried to enforce the volume by adding small paper pieces underneath the Fishmann piezo cable so to
be higher and get more pressure by the strings...it's not working... any idea / clue ??