Relief: very little. I like the neck almost flat and that's how it is right now.
In fact, I've had a folded cigarette paper in the A nut slot for some weeks - to stop the open A buzzing.
I've just swapped the paper for foil, filling the slot a little more and yes, buzz is gone from the fret. So thanks!
Hope so! I realise that an adjustment here usually means a compensating adjustment there... I have to warn you: I don't have feeler gauges or suchlike fancy gadgets
BTW - We're talking about a short scale (31") bass. In case that matters.