[App_rpt-users] URI frustration

I was up late last night still trying to get my tkr-750 working with my URI. Thank you to the guys that sent me wiring info, but i'm still not working right. The audio being transmitted from the repeater sounds like it has AC buzz in it. When I transmit with my portable, the repeater only stays keyed for 5 seconds. Does anybody actually have this working? What should my node stanza in usbradio.conf look like?