Okay, so I finally bought a PC7336 tonight and am so excited. I've had Sonus SFX-2 and SFX-3 on the shelf in anticipation. I've done a fender, door, hood and just started on the front bumper. The product has just started dusting really bad. I'm not sure what I'm doing wrong and am in the middle of this. (It's on my Integra by the way). Someone please give me advice on what to do so it will stop dusting so bad.