First photos are Medpor RZ Extended round chin 8314 medium installed 2wks ago. It's too big. Meeting this Mon&Tue to discuss redo with same screw fixation Medpore brand (old silicone implant [medium with wings cut sort about 1.5-2cm each side] shifted some & caused small bone erosion). BUT how do I know how much smaller please and Medpore catalog has 4 different types of chin implant styles to choose. Also have solid bump on ith sides of jaw - bad implant edge? Please help asap.