WRUW570,
I am running two CDM mobiles and the ID-O-Matic 4 in my repeater setup. I have found that occasionally regardless of programming, if the receive radio's volume is turned down, as in if you can't hear yourself talking, it will not pass audio, however I get my transmit audio from pin 11 of the receiver (discriminated audio) instead of pin 5 (flat audio), this may be the difference in my situation as I have never used pin 5 of the receiver to acquire the audio for the transmitter. I have found this on more than one occasion, so that may be something to look at.
Here are screenshots of the accessory pins and accessory configuration on my setup. Hope this helps.... if you still need it, I can send you the codeplugs.
The Receiver Accessory Config.
The Recieve Accessory Pins assignment
***Using Pin 4 and 12 is not required, I use pin 4 as a remote knockdown using MDC-1200 and DTMF and pin 12 as a Repeater Controller reset. ***
The Transmitter Accessory Config
And the Transmitter Accessory Pins assignment