I have figured out how to fix the WebOS Doctor / 12% issue!!!
It seems that this particular issue is revolving around an issue with "resizefat /dev/mapper/store-media" and the fact that the fat size is different than the backup.
I did a bit of research and came up with the following solution:
Run WebOS Doctor via CMD line "java -jar webosdoctorp302hstnhwifi.jar"
When the Dr. hangs up at 12% open novaterm and connect to your device
Then type the following command:
dosfsck -r /dev/mapper/store-media
And follow the prompts to correct the fat size to the backup
Now put your tablet back into recovery mode and re-run WebOS Doctor. The error where it is hanging up should be gone and the system will flash completely.
(Comments from attempts appreciated)
OK - I had an issue after running webos doc 3.0.2 so I ran 3.0.0 - after it finished I had to plug the tablet into a power outlet and let it charge for a bit before it let me set up the system. It was hung up at the stupid HP splash screen for maybe 5-10 minutes but once it charged I got the prompt to select a language.