They're floaty by design like the HD800s. Any thicker earpad should help with the clamping force; might change the sound for worse though.

Hi all. I'm pretty new to the headphone world, having bought my first "real" headphones (HD 518) back in 2013. Since then I've enjoyed the hobby casually without going too deep. Since the HD 518 I've had ATHM50X (discovered closed back weren't for me at all), HD 598, and Fidelio X2. Used a e10k...