I should admit at this point that I am of the female persuasion; I play completely by ear;all my friends were very excellent male guitar players as I learned. We never discussed the technical aspects of setting up a guitar in the sixties. I got the D18 in 1965 after my Gibson J200 was stolen. Most of my firends had Martins,so there was no need to let them play mine. I just thought I had to work a little harder at it as my hands did not start out as strong as theirs. When I met professional performers, I did not think to ask about set up. Everyone always told me to never,ever let anyone work on the guitar. Thank you all so much for the information.