i'd xb ott. Not to be results oriented,but we never have 3streets of value anyway/we dont have that many bluffsI think and he has all sets in his range. As played def. bF ott.

I think checking back the turn could be ok here. Betting is ok too but I would size up to something like half pot and not bet this small. I'm not exactly trying to induce raises here and when he does raise I don't want in the back of my mind that I bet like 30% pot (something I would never do with anything better than 1 pair). You know what I mean like, I don't want to telegraph my hand strength this deep in a 3bp. Betting 24 then just checking back the river seems better also when he raises a more standard bet size I think we can feel more comfortable letting it go.

What can I expect the reg's range to be when he CC a 3b OOP? We're pretty deep with a fish in the pot

Some regs CC with an uncapped range here because they wants to play vs fish and not isolate vs you; something like a depolarized strong range. OR range and your 3bet range can change this scenario.