jeffp
psychonaut/retired
That sounds pretty neat but I am not one for blowing into my vapes, plus, I always underfill to just below the rails which seems to stop them from getting gummed up so much. It is interesting you say the trench should be slightly overfilled as I don't think I've ever heard that before.
As I see it the reason why the trench should be slightly overfilled is to ensure that after the box is shaken between hits there's enough flower to land inside the trench as some will fall to the sides.