Set over set - Can I ever find a fold here ?

The problem is that you have to put him on AA specifically - 99 and TT he probably would raise again OTF or OTT. But if the only value hand that beats you is only 3 combos, it is a tough fold to make. If you think he sometimes slowplays TT,99 despite the drawy board it becomes slightly easier but still tough.

I think the only way to find a fold here is to say ok he is a reg, he raises me on the river for 250 bbs effective when I have bet all the way and I certainly do not look like I am folding, it is the micros, so it has to be AA and make an exploitative fold.

He looks like a decent player with his stats, so I do not think he could have AT in this spot, let alone overplay it like that. He might turn KcQc into a bluff or something similar, but I don´t think this will happen often enough (ok, you only need to be good around 24%, so it is hard to tell. But in utg I think he has relatively few SC combos in his opening range that he could turn into bluffs here, given he would do that in the first place).

Well, this is a nasty situation and no-one will blame you for calling.
You have to be very careful when that deep though.