Sometimes you'll find irregularities on knives that are produced with a lot of hand work. The swedge on my Marbles Fieldcraft didn't match both sides, and my Marbles Campcraft had some grind marks on the blade. Neither affected functionality at all, but I fixed both with some careful Dremel grinding. Can't say as a few blebs really bother me if the knife is a user (I have a few blebs myself; unfortunately,I can't fix those with a Dremel).