Installing a Two Way Truss Rod Through the Headstock

I usually install truss rods on my guitars so that they can be accessed through the sound hole.  On my Celtic Citterns and Irish  Bouzoukis I have to go through the headstock because of my bracing pattern.   Some makers put caulk or bathtub silicone inside their channels to limit noise.  I hope my instruments last much longer then the life of synthetic bathroom sealants so I use hot hide glue and a fillet of the same timber.  This fillet is glued in position and then I plane it flush with the surface of the neck.  It's a little more work, but hey,why not?  My customers are worth it!  I think this is a great solution to the dreaded rattle I hear from many factory manufactured guitars.