Best you can do is leave those eggs alone, kinking issues are caused by fluctuating temperatures during incubation. I would not cut your other clutches until you see the first one peep. Cut day depends on the temperature you set your incubator to. I believe you had a viable clutch that had to overcome human error. I'm sorry but it should not be down to i'll have plenty of practice to get it right, these are living beings. Good luck in the future.