100% ok with things have changed.
I got to the line in your post after modifying what I believe is my "boot loaders config file":
"You should now be able to boot to TC14."
No joy.
Attached is the MODIFIED extlinux.conf, as you requested.
Structure of the system is:
/mnt/sdc1/
/boot /lost&found /tce /tce14
Attached file is inside /mnt/sdc1/boot/extlinux, NOT /mnt/sdc1//tce14/boot where the new 14.0 corepure64.gz and vmlinuz64 have been copied.
As the system boots, it TRIES to boot to 14.0 (initial booting text screen), runs into trouble, and defaults to the backup files which then brings up 13.0.
I know I've inserted quotes more neatly before, but can't recall how. Snapshots would be helpful too, but that's also unclear or unavailable.
Thanks for your guidance to this point. I'm reading and researching before raising my hand for help. I suspect i'm missing something simple, based on system behavior.
Step by step and learning along the way is why I'm here.