I agree that if you are cooking at hotter temps and not foiling, you will find you need to cook to a higher temperature. That being said, you also want to wrap and rest as well.
Or, you could go back to what you were doing, and happy with.
I'm feeling bearish, and I'm packing a Wusthof Grand Brisket slicer from MABA
"I'm Armenian...perhaps...but then again...maybe not..."