i have an old L6s copy with a neck problem. the trussrod cannot be adjusted that much to get it straight enough and stay straight when strings are setup. (did the extra washer trick already and that gave a better working trussrod, also pre clamping the neck in a backbowe and then tightening the trussrod) the problem is that with this glued on neck the relieve curve starts were the neck isn't above the body. it creates what they sometimes call a humb by raised wood with bolt on necks. but without strings i get a almost straight neck now i have read that some people heat up the fretboard when the neck is clamped in the right position. the warm glue would give the fretboard the space to reset a little on the neck and when cooling down it will stay better in the position you want. (i hope i explain it correctly/understandable) my question now is if some off you have experience in this technique, and if this could be a possible solution? and if you did, how did you heat up the glue?