Is there a way to adjust the radius for AutoMerge welding verts? I'm retopologizing a mesh I created in Blender and I'm trying to use AutoMerge to merge verts by dragging them close to each other. Unfortunately, the radius of effect that AutoMerge uses is very tight and I have to fiddle with moving the vert around so much before it merges that it's wasting time. If I could adjust the distance that AutoMerge uses to decide when to weld verts my workflow would be so much smoother. Any ideas?

Thank you
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Using AutoMerge Editing - things aren&#39;t merging, what isn&#39;t right?

Go into Edit Mode - Tool Shelf - Option Tab on the left - change Double Threshold