Oh boy...

Well, if you are really worried about Mr. Nitty, then the call on the flop is reasonable. I guess. I mean, this is not what I would call a dangerous board with Kings, though it can certainly get dangerous without a nice raise to 80. I guess you wanted to keep the pot small against Mr. Nitty, so, fine. Or maybe you wanted to attack when a ragged turn came up, see if the BB tries to set a trap with AQ. Fine. I'm not a fan, but fine, fine.

Your biggest problem with this is that you are getting so little information about BB, and to some extent, Nitty.

On the turn, it's like "YIPES!," whatcha doing here Cochese? You have to bet out on the turn. I mean, like, $100. I doubt highly that anyone here is going to check with the flush. If Mr. Nitty has something big, you'll know right now because he's tight and is super afraid of someone hitting a full house on the river. If BB hit his flush, he's reasonable, so he's making some kind of bet to keep you away from the FH. Naturally, if either had a set, they are betting out. Time to finish things up.

$40 is a very squeamish bet, one that shouts that he is worried about the flush draw. Boy does it look like he has KA. Call.