I'm having trouble intonating my essex after a bridge change and string change. When i changed the bridge to my gotoh i measured at the center of the board to the 12 fret, 17" i set the saddles to mid point of travel (each one has its own little track thats about 1.5cm or so long and thats as far as it can go) and marked the location of the bridge and the holes and drilled away. I had the same intonation problem with the original bridge. everything was so far back it wasnt funny. i really cant move the bridge back with out exposing the holes of the previous bridge and the current one. Thanks all PS. would diff strings or lower action help?