[Smurph64]

Bottom line in a preflop capped pot slowing down because a flush holding of diamonds hits the turn is costing you money more often than it is saving you bets to lose.

It is imperative to forget about protecting losses when you hold AA until you get a lot of information from your opponents that you are beat.

This isn't the case here. Why would you give them an opportunity to catch up and hit another diamond if they are holding the case Ace?

If you are afraid of a set well it doesn't matter you are beat anyways, if they have a set they misplayed it so you already saved money. Unless you plan on folding to a bet never slow down in this sitation.

Max your winnings with AA as much as possible. Unless you plan on being tricky and check raising the turn. But the K being the flush card kind of kills that trick with a capped preflop.