Okay, I have a new (used) 55-94 Lakland 5 string which is great, with one exception, in certain circumstances the A string isn't as loud as the others. I know it's not a pickup issue beause the same problem exists on each pickup (Bart's) and on all three settings of the bridge PU. After checking that out I thought it might be the nut but the problem exists on open AND fretted notes. Yes, I've changed the strings and still have the problem. I've also raised the action. An obvious possibility is the saddle, but that looks fine. One last refinement of the problem description. I tend to pluck the strings between the neck and the neck PU or, if muting, near the bridge. When using fingers the volume difference is not at all noticable BUT, when I use a pick for some rock numbers, thats when the difference can easily be noticed. Weird. Any thoughts???