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This is all I've ever seen nils power augers do. Sounds like your blades are out of round.
No I haven't. I only know two owners. They don't handle the silt blown lakes out here. They can't keep the blades sharp, they collect dust in their garages.
Really wish I had known about these problems. Everything I have heard before said that Nils was the Cadillac of augers, starting to think its an overpriced pinto.
Two years ago me and a buddy were going to upgrade our 20 yr old eskimos, after reading all the rave reviews on IS; he got a power nils from cabelas. Went to the local perch pond, we both drilled a bunch of holes......verdict...i t sucked you could have bought it a week later in the cabelas bargain cave. We both use v-51 8 inch eskimos now.