Hoping to resurrect this thread as I own a '65 ES-125TC with a neck problem that I'm trying to diagnose.
The neck joint is fine and it appears to be original (not repaired). There is a good bit of back bow at the neck joint and the frets buzz at and above the 12th fret with a proper setup. I don't know the neck angle for this model but it appears the 'boat-tailed' section of the neck extension is at the proper angle considering the bridge height. I'm wondering if I can remove the truss rod nut, clamp the guitar down and apply tension to gradually pull it back into place over a period of a few weeks. This would require bracing the neck near the body joint and pulling down on the nut end of the neck ever so slightly. I would try the old tuner method of applying tension to the head stock but I think it's too fragile. If I could pull the nut end down to match the angle of the opposite end the bridge could be raised a little. It doesn't have but a couple turns to play out now. The top between the pickup and heel joint is sunken a bit as previously described but it doesn't seem to effect the neck joint at all.
