I have checked and cleaned the exhaust fan, it seems to be pulling stuff out the back just fine and I have a squirrel fan inline to help pull out the window. However I can see feel air blowing right out the front of the unit when it does things. From looking inside and feeling where the air is coming from it feels like the air assist fan is blowing the smoke out the front? Do I still not have enough pressure out the back? It seems to pulling air out pretty hard when I check outside and inside the unit.
The air seems to coming out the front surprisingly quickly. Are there other fans in there? Or something else that might be obstructing the air flow?