So basically I want a little bit of knowledge here, I got a used airbox for my dc5, properly cleaned it, got all oem parts and air filters and everything, there seems to be a slight amount of sand on the post filter area of the box, is that something I should be worried about before installing? I know sand can cause all kinds of havoc but this is a small amount, also will just water be able to flush it all out of it and the chamber