I have successfully set up the radio and control for the IC-7100 and can operate remotely. I have not been able to get my DXlabs Commander (CAT Control) to work from the control side remotely, it will work at the radio side. I was hoping to do this with only the USB cables at each end. Is that possible or do I need to run another cable from the radio box to one of the com ports on the radio RRC-1258?