I am trying to figure out how to rewire a superstar dm-507-5, which is a 5 pin Cobra/Uniden mic, for a President HR2510. I've managed to find diagrams for both, but not sure how to go about rewiring. The problem is that even though I am rewiring a 5 pin mic for a 5 pin radio, the wires and pins are not exactly one-for-one. Which pin should I connect to the RX wire, since the HR2510 doesn't have a RX pin? Which pin would the shield wire connect to? Does would anything be connected to the Up/Down pins since there is no channel switch on this mic?