[Ghazban]

I check/call this on Party but am not sure on Stars. Stars tends to be more weak/tight and doesn't have as many desperation bluffs on the river from missed draws. I'm comfortable check/calling an all-in overbet on Party because it'll be missed hearts a huge percentage of the time.

I don't see a huge number of hands that you are beating that will call on all streets (T9 is about the only reasonable one and it seems that hand would've raised at some point). If I check/call and lose to a boat (from a flopped set, I'd imagine as T6/96 seem unlikely to be limped UTG), I'll definitely make a note on the player as someone who will slowplay sets on draw-heavy boards. If I check and he checks behind with AT, that's another thing worth noting (passivity with TPTK on a draw-heavy board).