I have a TinyG V8 board that we have had for a few weeks. I went to add a Z-axis motor and one of the terminal block screws seems to be stripped out, it will not tighten onto the wire and the screw just spins. Does someone know the manufacturer/part number or source for the 2 pin screw terminal block motor connector so that I can replace the connector? It appears that the 4 position motor connector is two 2-position connectors side-by-side. Thanks for any information that can be provided!