I've got 3 dust blobs on my Panny AE200 and they're really beginning to annoy me. How do I get rid of them? Will a can of compressed air do the trick? Will propellant come out of it? Also, how do I stop them coming back? Can I buy a better dust filter for it? Should I make my own filter with some tights or something. The fan will always be on high, so it should have a bit more sucking power.