Wow, five days (first thread I’ve been fully taken in on) of this thread and no solution. There have been so many suggestions I don’t think I have anything valuable to say. But, I will go out on a limb and point to that body. When I think of pine, I’m thinking soap box derby, model airplanes, etc. Some pine can be pretty soft. Is the resonance being soaked up by that wood? If you tap on the body are you hearing a dull thud or something a little brighter? Before the days of fancy electric tuners, it was a tuning fork and your ear against the neck or body to listen to the tuning. Can you strum you guitar unplugged with an ear to the neck and then the body and hear a noticeable difference in the transference of vibrations? Crazy idea, hummm. That guitar looks really nice. I hope you figure it out.