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Hmm... What material are you printing with? Maybe the unsupported top of the radius is dropping down since its printed upside down.This could happen if it does not cool fast enough. Does the hole look round? Does the screw and thread work alright? If so, you could try printing it right side up, so the large radius is on the bed. You would just need a brim or some support to keep it from tipping over. You can't really scale it up because then it wont fit in the pocket, that would have been a easy solution.