I'm trying to track down a replacement quick release plate for an old Manfrotto 222 joystick head which was misplaced. The newer plate, the 200PL slots in OK, but the safety catch does not engage. The old QR plate was square with an even thickness all the way round and beveled on all four edges (as far as I can remember). Manfrotto say this has been discontinued. Does anyone know of a suitable plate from another system? I have scoured all the usual websites but can find absolutely no further info. It would a shame to scrap a perfectly good head for the want of a simple plate. Any advice would be greatly appreciated!