I was on my trainer for a bit today (just bought a fluid 2 yay!) and I noticed that my shifting was a little off so I was adjusting it via the barrel tension adjuster.

When I was in the 53-12 setting, I noticed that a really strange clicking sound was coming from my drivetrain and I couldn't figure it out. The RD seemed to be moving a little bit while the chain was running and maybe that was making a clicking sound.

Anyone have any experience with this?