So managed to pick up 2 pairs of MK Sound SUR55T's to add to my 750's as surrounds and height. But unfortunately the speakers come as-is and the seller did no longer have the wall mounting part, any advice on how these are supposed to be mounted to the wall (or ceiling). Or any other good flush mount you advise? I've found the XTZ flush mounts in their website, these are about 15mm from the wall, any alternatives which are closer to the wall? Attached is what currently is mounted to the speakers, is either of the parts original or something the previous owner fabricated themselves?