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And for those of us lucky enough to be in the US of A; the Chinese make these available for dirt cheap:
HERE
I have found them to be serviceable and when I get an old W&B I do not pry and twist but...

It may have been mentioned earlier..When you purchase a light duty/ modelmaker's flush cutter, the blades do not quite met. I carefully use the side of a low grit hone to get them to meet exactly....