I'm always looking for the perfect brush to clean my PB105 and I think I found it. It is a simple wisk broom which I picked up at Lowes last year for just a couple of bucks. It gets up between the water tubes and all 3 baffles with ease as well as cleans the side walls. Just stick your vacuum hose in the opening that is exposed when you clean the burn pot to keep the dust down. I have included a picture below for the benefit of those younger folks who may not have seen one before 
