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My 6" Nils has no center point, and I have no problems with , just start slow for a split second. I would thinks others would be similar.
No problems with my Nils or Mini Nero either! It’s all in how you use them. Most auger problems occur due to mis-handling like slamming it down on the ice, ice buildup on the blades, dull blades or other issues. Slow start is the ticket!