Did you keep it shaded too or just wet? In that kind of heat I've had good luck soaking it down every couple hours the first day, then burlap over the top kept wet for a week, and it held up with no cracks. The water truck hurts less than cutting out and repouring a slab.

Man, 40 inch pounds off is wild when you think about how small that torque spec actually is on those plugs. Kind of makes you wonder how many other "every time" jobs turn into muscle memory and your body just stops paying attention.

Man, I feel this one. I had a neutral that looked tight but was barely holding on behind a receptacle, and it cooked the outlet a month later. Now I give every splice a good hard pull before the drywall goes back up.