If this has been discussed before, or if I'm in the wrong forum for this discussion, please point me in the right direction. I'm pretty much an Amps Forum dweller, and never stray too far ! Anyways, I'm wondering if string gauge has any effect on how low you can get the action, specifically beyond the 5th fret, or is it more of a neck - bridge adjustment process to get lower action in this area, or a combination of both ? I find myself playing more up the neck these days, both live and in the studio, and noticed that the gap between string and fretboard is, what I would call high, compared to what it is below the 5th fret on my 4 string, Fender Jazz basses. Just for reference, I use Fender Nickel-plated steel roundwounds, .45 - .105 strings.