I continue the last build i started more than a year ago. I have made the truss rod canal 1-2mm deeper,so in the future if i need to take the truss rod out,will be easy,just pulling it from the front side. Is this good idea or bad? Maybe these 1-2mm of air will be more problem with the work of the truss rod? I can glue a piece of maple to fill this. I havent glue the fretboard yet. What is best to do?