Tripods With Rotating Post I Have An RCA Camcorder DSP3 And A Tripod CPC VT620 With What Looks Like A Rotating Plate.Ideas To Make It Fit

I have an RCA camcorder DSP3 and a tripod CPC VT620 with what looks like a rotating plate.Ideas to make it fit - tripods with rotating post

It is a hub on the tripod and the bottom of my video camera is a supporting metal screws, but can not find ways to make it work. I have no way to get the disk rotation was completely contained, so maybe do not work with my video camera? Where can I get a screw and MKE at work. Any help is welcome! I like my ghetto cam!