Improving comfort of Presonus HD7 cans?

So I've got a pair of presonus HD7 cans. These appear to be an OEM rebranding of the Superlux 618. To me, they sound pretty alright, but I've been struggling with wearing them for longer duration.

Since I'm not exactly hyped on splurging for new cans that I'll have to burn in, etc, I'm curious if there are any good means of improving the existing cans. Pads and headband would be particularly nice to do something about, but I don't know what to look for in terms of compatibility and fit.

That's honestly all far as questions go.

What issues are you having with the comfort? Do you not like the material? Does your ear hit the driver (the cushions are too shallow)? Is the clamping force too hard?