Yeah every breeder I have spoken with indicated that it (tail kinks) is an incubation temp issue, not inbreeding. I have one, and he came from flawless siblings and unrelated parents. You can see his little flaw in the pic here. The breeder thinks his egg simply just didn't get the same perfect temps like the rest of the bunch. Have had this boy a year now and he is doing terrific! Has grown about 2 feet in eleven months.