NorioDS
Sorry, you mention tuning stability? What nut does it have? I have a guitar with a Graphtec nut, and I am not impressed. The strings do not slide smoothly, and tuning is a hassle. Touch the string behind the nut and it jumps up to 10 cents - "stretch" string and it comes down again. No good, will have to make a bone nut sometime down the line. The Graphtec is also not made to fit and forget, on this one the B string slot is uneven in height, leading to a buzz. I shimmed it with paper, to get the release point at the edge of the nut. One more reminder that I really need to invest in nut files.
Your bridge/tail solid?