Jerry N.
TVWBB Emerald Member
Closing any vent will decrease temps, not increase as the increased airflow creates hotter temps. As far as the marinate goes, I see no issues with putting it on while still wet. My guess is closing that top vent some created the creosote that was already mentioned which will be a bitter taste for sure.
I agree with this assessment. I think that it also didn't help that charcoal was added. I think there was a multiplier effect here.
Sorry to hear about the cook. I know how bad it is to do all that work and not have it come out well. With a nice piece of meat, it can also be expensive. Better luck next time.