If it is probing like butta it's done your problem lies in holding all wrapped up like a papoose in a rocky mountain winter blizzard. (your retaining the heat). Once it is probe tender leave it wrapped and let it rest on the counter until the temp drops at least 20 deg this can take a few hrs. then put it in a cooler to hold. Placing it into the cooler strait from the pit is will continue to cook for a long time.
I never met a Cow that I didn't like with a little Salt & Pepper! Certified PORK-A-HOLIC