As far as dirt in the bowl, I'm going to try and address it with one of these things: http://www.7602racing.com/prod_t6cf.php I have two on order. If nothing else, it ups the bling factor! The dust thru the carb hose theory is new to me. These filters look like a good way to block the dust, however, the dust in the front of my carb appears to be all very fine particles. Seems that the hoses would suck just about anything airborne thru them, not just very fine particles.