I am planning a unique build that will not allow me to have the truss rod adjustment at the headstock. It's not likely I can place it near the neck pickup either. I know I saw something at one time where a builder had the adjustment near the neck/body joint and had a 90 degree adapter that placed the adjustment nut on the back of the body. Has anybody seen this or know where I can get some information on this setup? I should have bookmarked the web page because I cannot find it now. EDIT: I already know about the Gotoh side-adjuster for modern guitar necks. The custom guitar I saw had something similar but it was a smaller mechanism.