What pads are they out of curiousity? I'm personally not a fan of ebc, but apparently they've changed their compounds at least.
May be worth just trying some different pads rather than discs as well.
I had issues with yellowstuff on drilled rotors, but maybe you'd be ok with their newer compounds? However, personally from that experience and seeing some pictures of pads disintegrating I'd be trying something else like ferodo/endless/performance friction/dixcel.