Recently I've been hardcore camping for new pets, and I have been reasonably successful, snagging Sambas, Ghostcrawler, Karoma and just recently, Madexx.
However, I have a few questions regarding Madexx. Today I finally got him to spawn after one of the most painful taming experiences I've ever encountered (Intensity, not length), with boredom overcoming me with a very small area to cover and general channel trolling my poor hunter. In any case, he finally showed up in the color I wanted least, Black. Big sadface, as I just don't like the color scheme. Had I been thinking clearly, I would have asked if any other hunters wanted to come tame, but my head went blank and said: "See rare, tame rare, rest".
Now, after taming, I decided I really would not settle for this color scheme.
Question 1: Has anyone been able to get any rough idea of his spawn timer? I mean anything. I'm estimating probably around 6 hours, however I did have a fairly long camp out session for about 12 hours and saw nothing, so maybe closer to 14?
Question 2: NPC IDs. I added in all the IDs off WoWhead, checked them all multiple times, tested npcscans alerts restlessly, and yet, when I did finally find him, npcscan didn't yell at me at all (Probably why I didn't find him in the first place, I had been semi afk some of the time). Is there something wrong with the NPC IDs listed by WoWhead?
Thanks in advance for any information you could possibly give me

Crashh.