"Adjusting" shear blades
I got a new pair of Maruko diamond shears as a thanks for a couple cherry wood blocks I made for a friend with the rather ambiguous caveat that said shears need to be "customized to cut right". And they don't (I'm spoiled after using Carlo Dona shears). The blades don't meet right and significant sideways force is needed to get them to meet and cut right.
My question: Is there a "proper" or better way to bend or cold forge shear blades so they meet and thus cut right? They are thin. What should be the focal point? Hammer? Mallet? Bench Vice? Don't even try?
Thanks for any advice