PDay

I agree with this. If you dump the coals as you did and they are not tightly grouped the heat will just not follow.

Completely echo the info about the ambient temp. I cooked a 4lb sirloin with my new Meater+ on Christmas Day to medium repair and was...

Just run a tape measure to 26" and run it round the edge of the lid and bowl, you'll soon find your issue.

I've done a couple now on clear cold days (for the UK anyway). You'll be surprised at how fast they cook, I would be looking at nearer...