lol...
Well we fixed the actual "issue" a while back, and now we're wading knee-deep into the "why" and the "how" of it all, which isn't really something that your everyday mod-user is going to care to do. Obviously the developer might want to know where things are going awry so he can fix it for the next release, but honestly I'm just digging because I find it fascinating. It's probably because I majored in computer science.
If you need me, my nose will be in the Weidu documentation.
The reason I follow this discussion is that my own mod already ran into problems with the 20x tweaked Daevorn several times and I revised my solution for it at least three times. Items and scripts taken from him affect one of my quests as well.
Currently my solution is to replace an item (Sling+1, who needs that *loot* when he comes to level4 of Cloakwood, you can have a hunderd of them by that time?) by my mod item, but only if the respective NPC is in Party when you meet Daevorn. Of course if either the item or the script block that replaces it is tweaked away, my quest fails