I ($900) raise UTG with Ks Kd to $12.

B and BB both call.

B ($900) is a good reg, haven't seen him get too out of line yet. We don't have much history.
BB ($65) is a fish playing around 95% of hands and has been stacked several times. I'd say he's kind of normalism aggression-wise. He may be a little tilted and I have kind of raised him out of a few hands.

Flop ($36) Qh 4h 3h

BB checks.
I check as a way to protect my range here. I know betting is standard, but I figured that it would be really difficult to continue in the face of a call or a raise from B. I didn't feel like I had enough hands that I could defend with if I was faced with a raise from B so I decided to check.
B checks.

Turn is a 7d.

BB throws in his last $55.
Here I think for a bit and call.
B also calls which surprises me a little since he checked back the flop.

River ($200) is a 3c.

I check and B bets $85.

I call.

This whole hand is up for question so let me know how you play it and what you all think about the flop check on this board. I'm trying to shift to a more GTO style so that was really the thought process behind the flop check.

On the turn it was close but he's playing like 95% of hands and he could just be shoving a queen here and I've really underrepped my hand.

On the river I could see him value betting a queen and I doubt he has a flush since he checked it back.

Nice Hand.

I think you played it fine. A lot of the times I’m pot controlling with a big pair OOP. Really stinks to be put to a tough decision with one pair on later streets when pot is bloated.