I was planning to smoke 2 7 lb butts overnight at 220° to be ready for an afternoon party but somehow they finished in 5 hours. I even have an extra oven thermometer (that i've tested) along with the external one so I know the temp is correct. Both butts looked the same as others ive done and seem super tender to the touch. Has anyone ever had this happen? I'm holding in the oven at 170 wrapped in plastic wrap and foil hoping it will still be ok by this afternoon (9-10 hours from now). Any advice?