Some of the hardest original series wackys to find centered are the ones that are landscape oriented. Particularly 8-Lives and Sweathard come to mind.
Bigtomi offered the following theory for why this is in another thread. His comments refer to the following picture:
"If you look at the 2nd sheet, 8-Lives is also only printed twice per slit, but more importantly, the artwork is taller than the adjacent art (compare to Putrid, as the most obvious example). This tells me that when the sheet is cut, it's almost always going to be off-center to the bottom (left side of sticker). And, this is quite true. (How many 8-Lives have you seen off-center to the right?). To get 8-Lives well centered, the row(s) under each would wind up off-center toward the top."
While I was buying this at first, it now seems to me that the overall rectangle consisting of the artwork and the copyright line will have the same dimensions for 8-Lives and Putrid. In the case of 8-Lives, the artwork is taller, but it's the same height if you include the Putrid copyright line in the comparison. Similarly, the 8-lives is the same width as Putrid if you include its copyright.
So I once again don't see why 8-Lives should always be off-center on the bottom. Tom, can you clarify your theory?