Try leading into it with a bunch of different edges? They seem sensitive to that.I just snagged my fifth? Or sixth? Vintage La lune. I've been trying to like them for 12 years. Never got an edge out of one that would make me put away a coticule, much less a Thuri. Les Lat's (A good, usable one that isn't covered in edge-damaging flaws) are much better. But maybe this one will change my mind.