sorry to hear about your clutch. sometimes it's a compatible issue between the 2 snakes like angllady2 said. it happens, and this is what most would call a weak clutch. happen to me when I first started breeding and I was trying to figure it out just like you. so it's very possible that it wasn't nothing you did or an incubator problem, just a weak clutch. this is the bad part of breeding. it sucks when it happens, hope you have better luck on the next clutch, don