There does seem to be a little hick up with the adaptor bolt loosening a little, creating some wobble between the adaptor, and auger shaft. I retightened mine another 1/4 turn, and its been 100% tight since, probably 40 holes in, and its solid. Ive heard others with the same experience, others say is has loosened a few times. Some have lock tighted the bolt. I would say its a problem, but def have to watch it the first time or two.