So any solution? I havn't really heard any solution, i can send the MLOD to one of you so you can take a look at it if you would like. That way you can see exactly what is going on, PuFu or Max, just send me a PM on how you would like me to send it.
now, can't give you a solution unless i/we know what the problem is in the first place...no?
I for one think that it has something to do with a problem on your uv unwrap. On the other hand, max believes it has something to do with face triangulation. Either way the easiest thing would be to provide a close up on the UV where the stretch occurs.
as a side note, while you seem to be using a 2^n by 2x2^n texture format, you are wasting a LOT of the UV space, so i would advice for a new (and better) unwrap.