Just up checking on 30lbs. of Boston butt....see link below for 11:00 pm. worries..thanks AZRP for your earlier help.
At 4:20 this a.m., butts (4) are about 170 to 172 degrees internal temp. After earlier concerns about not enough heat, (I have adjusted dome thermometer so that it is longer touching the butt when I close the dome)the dome temp is just below 300.
I am now heading back to bed...it was a long day Friday...my oldest daughter graduated from high school. Be back up around 7:00 a.m. to check the butts.