Yeah i always forget about that small fan in the head and it shows lol. If you had seen the 
before i cleaned it you probably would have thought i had a fire in there 
Im going to put one of those cyclone knockouts in line out of the machine then install the boost fan that @eflyguy recommended here In Line Fan - Just Do It down stream of the cyclone. Just want the cyclone so i’m not throwing as many particulates out my window. i had a nice little pile out there when i checked last.