I second what Oak said. I've had issues with asymmetrical stuff for years. Jokingly, I've said I'm crooked, but, it's not a joke. I do have a curvature of the spine, but it's really a minor thing, in terms of how bad curvatures can be. Long story short, I've tried to pay more attention to how I hold myself and I realized I always have one shoulder higher than the other, and I'm often hunched over. I've been seeing my MacKenzie PT, and he also "unstuck" me with just some minor manipulation and daily exercises on my part.
I was getting worried, as I was having considerable back pain riding, stiffness in the AM, and all other kinds of stuff that some might attribute to "old age." Sigh, the cycling position is not good for me, but as long as I keep doing the exercises, I'll be OK.