Last rehearsal I was playing in Drop D and when I played an A on the D string, I was waaay out of tune. The gui**** had a look and had me play an open D then a harmonic D and they were the same. 12th fret was sharp though. gui**** says "adjust your intonation". So I did some searching and found some info on setting intonation and the intonation is out on both DADG and EADG, so I tuned to EADG (my main tuning) and attempted to resolve the problem. I'm having an issue I don't understand: Both websites I referred to said if it's sharp (which it is), make the string longer by moving the saddles AWAY from the pickups/fretboard (and if flat, move towards). I move it away and can physically see it has, and it gets sharper. Not flatter. Oh, I am using a Korg CA-30 chromatic tuner. So I went the other way to humour myself, and was able to resolve the 12th fret tuning, but the open E was flat. Tuned that back up and I have the exact same problem with the 12th being out, except the saddle is in a new position LOL. Short of getting a pro to look at it (gig in 2 days LOL), what else can I check to resolve this issue? Can I physically see if the frets need work or is that an experience thing? Any advice welcome! Thanks!