I have discoverred another thing..............today my Yuki's DRSD case back arrived (for my MBW). Ironically, the DRSD Caseback fits the Cartel 5512 and MBW DRSD of course. Note that and as I have stated, the Cartel 5512 doesnt not fit either the geninue 5513 case-back, nor MBW 5513's CB & other cartel version (Siliex old version 1675 or other cheapie 5513)'s CB . Did anyone find out the dial openning? I was wondering if gen dials can be fitted for these new hybird.