I have an Epiphone Sheraton and last night I struggled...wrestled...for hours trying to intonate the darn thing. I did the harmonic/fretted 12fret thing as well as the 3rd/15th fret thing...and I could get the tones pretty darn close using the moderately decent tuner I have...but the only string that played in-tune notes up the fretboard was the high E string. EVERY other string was sharp on every note up the fret board...AFTER I had intonated the strings the best I could. I have cranked the saddles down as far as they will go and they are turned around as well...flat side, not bevelled side for more distance. I guess this means I need a new bridge? Do I need to look at something like a Tonepros?