Out of 109 shipped eggs and 3 hatchs over the last several months, I have 7 chicks to show for it. We have followed all the rules and instructions as far as I can telll...continuing to adjust temps and relative humidity, buying a hygrometer, ensuring proper handling and prep of eggs on arrival, locking down on day 18. My hubby thinks it may be because I've interfered (minimally ) on a couple of chicks who pipped and then nothing after 12-14 hours. I've had great success (90%) with my own lakenvelder eggs. These little ones have been silkies, barnevelders, mille fleurs, amd other small heritage bantam breeds. Candling at 18 days they're about 60% viable. Then we check post failure and the majority are perfect little chickies that just didn't hatch. I'm using an automatic turning, self--regulating incubator. Please say something to reassure me...it is heartbreaking burying these little beauties . I want to find a reason to try again but...... Thank you in advance.