I'm rather novice when it comes to dealing with the setup of my guitar. I fear that if I do something wrong, I could do permanent damage to it. Anyways, I have a slight issue where the action is slightly lower at the headstock than the bridge. Classic truss rod adjustment needed right? Well, the neck appears straight to me. I've recently learned about a process called "shimming" which seems like a major thing to do but when looking at the neck, it appears that rotating the neck in that fashion makes sense for fixing it just based on the way it looks, but I really am not an expert. For now, my guitar seems to play ok. Feels pretty good, sounds very good etc. The action at higher frets is ever so slightly uncomfortable. Is there an easy fix I should try?