Whoa! What day. (spent hours yesterday with Comcast phone reps trying to figure this out)
This morning, a few more phone calls to Comcast trying to figure this out. No luck.
A phone call to TiVo confirmed that I should get "all" the channels I pay for. Stating that the two Comcast Xfinity store reps were wrong saying the M-Card had channel limitations.
The TiVo phone rep figured out that the CableCard wasn't "Authorized" properly.
I was told exactly what line of code in the CableCard Conditional Access menu was of concern. Off to call Comcast again.
Then it happened.
I lost Internet for hours.
No one could figure it out. No signal was getting to the House.
Everything was fine until a Comcast phone rep was poking around the CableCard values trying to Authenticate it.
Multiple Levels of Technicians, Managers, etc., they couldn't figure out why there was no signal coming to House.
Hours on the phone. Reboots, cable change outs, backup customer owned Modem attempts.
Then all of a sudden, it all came back. Internet, and all the channels on the TiVo!
No one knows what happened on the Comcast end or will admit, but it all came back fine.
Thanks for all your help and suggestions.
Hopefully we can help someone else.