So I have a 18.5" WSM and I'm sure that everyone else has the same problem, just looking for suggestions. On cooks I pack the charcoal ring full of charcoal and right around 7 or 8 hours the temperature starts going down because the fire is clogged with ash. My question is what do others do I've kicked the legs and also stirred the coals gently to get the ash to fall through the grate. But when I do this I see the ash drift up onto the food giving it a little ash on the meat which I'm trying not to get.