Mine's the same. I trimmed the 1mm ish part of the pad that didn't touch the disc with a cutting disc. IDK whether it made any difference or not. I have a different issue as well. The original rotor developed a pulse like it was warped after a few 1000km. Replaced it with a Ducati one from Metal Gear. It was fine for a few 1000 then it started as well. Goes away for a bit if the disc or pads gets a good sanding but comes back quickly. No run-out measurable. I've kind of learned to live with it.
The Monster is even weirder: brakes shudder. New discs, still shudders. Took off one caliper, shudder gone. Just for fun, put that caliper back on and removed the other. Shudder also gone. Both calipers back on, shudder is back. WTF?