Success. I followed the 4 step procedure, and in spite of my TDT being at 1920, I was able to successfully map X4, and subscribe to a package on X4, including the guide. (Actually, I subscribed to the guide, first, just to see if things were working, especially since I can still watch Showtime on G0-101. I do not get the same screens as mentioned above for EMM providers, etc. 6-7-7-8-1 gets messed up with a password request. I have an old 922, so the program sequence may be different. But, it works. And, I can use the system to steer the dish just fine. And, as I mentioned, I am still able to watch G0-101. Also, G4-16 and other (very few) NTSC channels come through just fine.
One important note: When I pushed the power button on the receiver and held it in for 3 seconds as per the instructions, a green light above the DC2 light started to flash. I assume this was when the receiver was downloading the correct map for X4 (it was not correct before). This light continued to flash for about a minute. After I turned the unit on, X4 had DMX music in the 900 channel range, as opposed to the 800 range before I performed step 1 of the 4 step procedure. Also, I did step 1 with my receiver tuned to W5-216 because I could not tune it to X4-216. After step 1, X4-216 was in the map.
So, a big thanks to everyone and I hope this helps some other people. I used Websams for hits.