I don't like following your gut feeling and putting him on just a set.
You need to evaluate each hand that villain can have, and give each holding a probability.
His preflop call makes it more likely that he had a weaker hand, so you give weaker hand a higher probability. You can't exclude just yet the other holdings.
In my last calculations there are 6 kings(overpairs) hands and 3*3 pocket pairs for sets. So i distributed 60% chance that i'm up against a set, and 40% against an overpair. (And he's never really bluffing with this distribution.)
Against a set normally all (or most) of the money would go in either way. When villain just calls with his set, the pot will be 12.1 and the remaining effective stack 15.8. Hero will at least either bet turn or river for at least 6k. This will make a pot op 24k and will leave Hero maximum with 9k if he folds.
You don't have an overpair often in a tournament, and you certainly don't have the time to wait for good hands. If this was a cashgame it could be a different spot. It's no shame at all to go broke with an overpair for only 66BBs. It doesn't make sense to fold you through the tournament in these spots. And then be left with 30 BB and need to shove it allin preflop with AK for a flip.
It doesn't matter if it's a 10k or 1c event.
Harrington was 'wrong' and in this spot villain had a set. Eventhough, he still thinks calling is best. This isn't without a reason. It's exactly why he put a hand like this in the book, and i hope my explenation will give you a better understanding of this way of thinking.