I have an old Goya acoustic I really like, but has a bit too much curve to the neck. The truss rod adjustment is at what I would call the neck heel on an electric, just inside the sound hole. It's the only guitar I have with the truss rod adjustment in this location. Which way do I turn it in order to straighten out the neck? I'm thinking clockwise, and maybe I'm overthinking this, but for some reason I'm not confident in my conclusion. Also, it's a little tough to turn, so I don't want to put any force into/incur any risk by turning it the wrong way.