[dave44]

I don't understand your flop raise at all. I probably would have peeled on the flop only due to his wide range of 3-betting hands. I'd then check-call that turn and probably raise the river.

Given that you raised the flop, your turn check is interesting. I assume you think he's 3-betting any made hand on the flop, which leaves unpaired overcards as his most likely holdings. That ace either gave him a pair where he probably has you outkicked or puts his KJ or KQ in a tough spot. As long as you think he'll bluff the river with most hands, its probably better to check despite the risk of free cards, but it looks close.