Bars too wide maybe? I recently swapped out the 42 cm bars to 38 cm and solved a myriad of little nags that I had. Since you just mentioned elbow pain, I realize that that seems to be gone too.

Not that any of my issues were major, but they were slightly annoying for the longer rides I'm doing.

There are likely other things the annoyance might be from, so don't get too focused on any one as being the absolute solution.