I have a 1972 Goya G174 on my bench in need of a neck reset (among other things). I understand that Goya was using a hardware joint that used a continuous rod up the heel and into the truss and two socket connector bolts through the block. Only problem is that I only see one 3/16 or so hole and no bolt, only a small glint of metal down inside (see pic). Before I do any exploring, is there a simple explanation? Unless that glint of metal is a threaded screw of some kind (which couldn't possible take the stress by itself), I have to assume it's a dovetail joint and proceed that way. Magnus is our resident Goya expert, any information on this?