Quote Originally Posted by Andy40 View Post
The saddles should sit at the 1/2 s ale mark too, the high e should be exactly the scale length the others can be compensated by moving the saddles
It's a 4-string bass Andy, so doesn't have a high E. All of the saddles are going to be a bit further away from the nut than 2x nut to 12th fret crown distance would indicate. And even on a guitar, the top E will sit very slightly back; the heavier the gauge of strings fitted, the further back it will be.