I recieved a 210mm kurokumo recently from kns and noticed there was a bit of wobble near the heel. When I bring the edge down onto a surface I can feel a slight pivot-bump, rather than a smooth action from tip to heel. I cant visually percieve of any overgrinding, and the blade seems straight. None of my current or past knives have had this issue ootb. Was it just sloppiness when they gave it an edge, or is it potentially a structural hassle down the line?