I myself wouldn't check the turn, I mean, why would you fear that 4 dropping right there? Someone with AJ or an overpair right now is going to feel suspicious, and if they have that and a flush card drops, you are getting no more money out of those hands. Add on top of that you are giving someone with a jack in their hand a free card to beat you!

On the other hand, any decent player who is drawing to the flush will see that check there, and might come to the conclusion that even if they hit their flush, it's not going to be good if it comes.

I'd continue with a 3200 bet here, hope villian takes it for weakness and raises me big so I can take down a big pot.