I own an Alves de Puga petite bouche. Trying to get the luthier Jean Louis to return my email, with no luck ( I even sent him the email in French; maybe he's on vacation). Anybody know the wrench size for the truss rod? I think it's 4 mm. The truss rod tends to rattle when it gets loose and it sets up a harmonic distortion on the "G" note in various places on the fretboard. Adjusting it occasionally does the trick. I just want to get the right size wrench with a handle to make the job easier.
Saw a YouTube video for a fix, but it's a little scary and radical. The luthier suggested lifting one of the dots on the fret board, drilling a hole through the fretboard to just in the channel where the truss rod sets, then piping in some silicone caulk or wax. He favored caulk because it really never dries entirely, but sets up a bedding that can dampen the rattle.
Not willing to go that far at this point I have been happy with just tightening up the truss rod every now and then.
Also, I'm having a problem with one of my Miller tuners. The D string tuner tends to tighten up and loosen up during tuning. It's a sealed tuner, and all the other tuners work fine. Any thoughts on how to diagnosis or lubricate it?