Xantis Ixtax doesn't seem to be working correctly as well in regard to recharging the ring. SK has amiable faction with and when asked "What ring of the dead" she responds like it is not high enough. Wondering if this just has not been put in yet.
Here is the correct text from a post on EvilGamer.net where someone went through the quest text and posted a log:
[Fri Feb 25 03:36:54 2011] You say, 'Hail, Xantis Ixtax'
[Fri Feb 25 03:36:55 2011] Xantis Ixtax says 'Greetings, disciple Chania. Feel free to inspect my wares. I am here to serve all necromancers of the Dead. I can also enchant a [ring of the Dead] if you have one.'
[Fri Feb 25 03:37:01 2011] You say, 'ring of the dead'
[Fri Feb 25 03:37:07 2011] You say, 'ring of the Dead'
He won't respond to either spelling. No, I wasn't invis.
I hand in the ring.
[Fri Feb 25 03:37:21 2011] Xantis Ixtax says 'Come now.. I said I require the ring of the Dead and 10 gold pieces.'
This is where I started to get worried.. I forgot about the gold, and only had 5 gold on me. I gave him 1pp instead and it worked ~
[Fri Feb 25 03:37:37 2011] Xantis Ixtax says 'Here you are, disciple. I have enchanted your ring once more.'
[Fri Feb 25 03:38:17 2011] You say, 'what ring of the Dead'
Old school, add the word "What" and now we're golden.
[Fri Feb 25 03:38:17 2011] Xantis Ixtax says 'The ring of the Dead is the mark of loyal members of this house. One can use it to bind his soul to any point, but only once and then the enchantment is gone. It is my duty to enchant the ring of the Dead once it is drained of all power, but only for a loyal member. I believe you to be loyal. I require the drained ring and ten gold coins.'
http://www.evilgamer.net/forums/showthread.php?t=7285