Joe! I think I want to check one more time that we are comparing the same type of measurement. It is possible that we weren't talking about relief the same...I was actually not talking about relief at all with my measurement, come to think of it. I was poorly trying to communicate that,
at rest, without 'fretting' any note, I have 1.5mm clearance under my G string down to the board. This might be helpful for the owner with the bad setup, as far as setting saddle heights.
I just attempted squeezing the G at the 1st and 24th frets (with a helper) to measure what I'd call the neck relief (gap), and it was too small to measure. Probably between .1-.2mm at the 12th fret. I'd need to go get my feeler gauges, and they are out in the cold garage...nope.