Made a vacuum pellet cleaner, like the ones on ebay and ran a 40# bag threw it twice and got a total of 2.5 oz or 5 FL oz of fines. This is my first year with a pellet stove and would like to know if this excessive. I really rather not clean them If I don't need to. I should add, the fines are mostly dust very similar to the ash. No small chunks of pellets like you would get from screening.