I don't see any symmetry issues that you are talking about
That being said, if you are seeing them and allowing them in to your head you're gonna suffer making mass gains trying too hard to grow a little here, then there...
I'd suggest focusing on adding a bit of size and getting your strength up and fine tune if needed once you have more muscle mass to work with
One thing that I might be not reading correctly is that you said you switch up training every month or two. Hopefully you are setting progression goals and reach them before moving on to another program. "Muscle confusion" has its place but severely over rated IMHO