Here is one of my smeared cards. I tend to think the ones I have are print defects and not due to damage because the fronts look good and the backs look like defects not damage
The toughest cards for me in completing both the regular and blank back sets were the Blue Jay cards. Also, because they all seem to have been cut from sheets it is hard putting the set together without minor wrinkles. A lot of the cards look great even in hand until you make a close inspection which often turns up the minor wrinkles, I assume from the sheets being rolled and unrolled over time