Just thought I would post my findings for others that need to unroot to stock.
Research got me to
this thread with very clear and concise instructions and links to required files in v.3.29.xxx.
Personally, I am waiting to see if TornACL has any info that will resolve my original issue. If not, I will follow the above to unroot and return the phone to Sprint.
Thanks to everyone here and over at xda for sharing your knowledge and feeding this addiction
