hello all, just a thought as i look into the top opening of my nMP and i see a very light dust circle on the flat top a few inches inside the nMP. Should i use the same cleaning methods? take cover off and [lightly] blow dust away? doesn't look like a good idea leaving cover on then using light air can , where would the dust go? this new shape is making think i need to alter my dust free tools! what's everyone thinking????