This might all be known, but thought I would share anyways for anyone that likes to explore mods themselves.
Been doing some further experimentation with pad rolling, and picked up a pair of b stock solid lamb Aeolus and decided to just try creating my own limited perfs on just the inside rim. The idea was brought on by the personally good results I achieve for myself, when I cover up just the perfs on the outside of ZMF pads.
Well, I started out with just eight 2mm holes, and continued to make more and retesting them - finally got to 34 2mm holes for each pad - obviously, cant get them absolutely perfect between the two pads, but close. And have to say, perfs on just the inside of otherwise solid pads is really nice imo.
I have some other non ZMF pads on their way, which already have this exact "configuration" - perfs just inside, solid everywhere else. Will be interesting to give those a try, but wish ZMF offered pads in this type of config.