Pace is the company that makes the boxes; they are a subsidiary of Motorola
I called Panasonic to see if they had any codes for my PV-HS2000 and they said no, BUT they showed me a feature "IR Blaster Fine Tune" to tune codes manually following these steps:
Change Dialing & Input Settings
Vancouver - Comcast (Digital) [yours may very depending on location]
Continue [this step just tells you to power off your box, but these boxes don't power off and makes it a pain when your trying to find the right code blindly entering in numbers]
This should bring up the custom menu "IR Blaster Fine Tune"
At this point the guy I talked to from Panasonic had no information on the Pace DC50X units.
My research took me to Pace America's website which I have to say is very disappointing as far as support as they don't even list the DC50X units in there product page. I sent an e-mail to the only US email address there was firstname.lastname@example.org
to forward my question to there technical support.
I now go back to trying every IR Blaster number in the "other" option in the cable box menu of my showstopper hoping to stumble on the right one, wish me luck!
If someone has a showstopper and wants to help in my blind attempt at finding the write code, please post here.