Mike,
I have the same symptoms, only with the optic 6. I have also seen that many others have had this predicament, too! But if i apply a slight "wiggle" force to the module, it goes away. For now I just rely on that wiggled connection. This is my only radio and i love it. i hope that i am not relying on blind faith here. please inform me if my actions are irresponsible, but i have never had a flight failure.

pat