How long does it usually take DC to do a 2nd/3rd/4th/etc. printing of a sold out issue? I apparently missed the memo that Superman: Lois and Clark #8 was going to be impossible to get normally. Also I haven't paid to much attention since I've never had any problems just picking up the first editions for the shelves, but do the new printings have different covers(I don't mean varients, I mean like just a slight color change, like this vs. 2nd printing).