When I set the intonation on my Ray34 by measuring the harmonic at the 12th fret then checking the fretted tone and adjusting as needed until perfect I noticed a problem: once I've got it perfect at the 12th fret I checked the tuning at the 1st, 2nd, 3rd and 4th frets and the tuning was out (sharp).
I've never noticed this before but I'm convinced I can actually hear it now I'm listening out for it.
Is this normal and can anything be done about it?
Is this the reason why fan fret basses were invented?