Any tips on keeping your signed/limited editions looking like new? I've noticed a few books in my collection have accumulated a little bit of dust along the edge of their pages and the boards on my copy of The Corpse King appear to be bowed outward ever so slightly. In a perfect world, I'd love to slipcase my entire collection, but since that's not a possibility, how do I go about keeping these books dust free, keep dust jackets without wrinkles and prevent the covers from bowing?