I would like to build a Through neck Tele for my grandson using Maple neck and Aspen body. I have concerns about the positioning of the truss rod. The scale I have in mind is 22 inches with 22 frets. However, I am not sure if the truss rod ( 440 mm) will be too long for the guitar. The only two options I can see are to cut the rod shorter or have the rod protruding into the body (although still inside the maple center piece. Thoughts?