Already been posted elsewhere and I can't take credit for this, but can verify that it helps quite a bit. They (Smoktech) must have heard the complaints and jumped straight from 1 to 3 holes, when 2 probably would have been best because 3 is definitely too much. Stick a round toothpick in the middle hole, break it off, and sand or shave off the nub that sticks out after you have pushed it in a bit. Ta Da! 2 holes. Still too much flooding? Plug up another hole.