Ok, I have a resolution to my original posted problem. Apparently the tracks (top and bottom) in the rear were a little dirty. They brushed them out and then applied silicon lube and the slide went out with no issues. Wow! It doesn't take much for this system to stop working.
To get to this resolution the following was performed:
- Checked for error codes, none
- Checked overall alignment, checked out
- Checked rollers, ok
- Checked voltage, ok
- Removed awning and slide out went out without issues so it was determined there was a little drag somewhere and they found the tracks needed lube.
I found that the Lippert people suggest using CRC Power Lube
so I'll start using that on a regular basis.