I noticed this too--and interestingly, it happens with the Frankensage in the photo, but not its reverse-image evil twin. I think the tolerances are a little wider than one might hope, but that just means that you do want to use some blue Loctite on the pivot screws. To get the blade centered correctly and get the tension how you want it, adjust both pivot screws rather than cranking one all the way down and then adjusting only the other one.
If you're doing all that anyway, you might as well polish the washers and the areas they contact--but only with extremely fine polishing equipment--so opening and closing will be as smooth as possible.
Nice to know i'm not the only one with that problem. I think I may polish the contact areas, before I lock it down. Thanks for the advice.