I probably waited too long and now my hens egg production has dropped off dramatically and I lost three hens in the last few months so I'm down to four.. The rooster is still active, and they're all only 3 years old or so. I've wasted 14 eggs in my brand new Brinsea Mini Advance in 2 weeks. I've been meticulous about setup and temp and washing my hands. I let the first batch go for 10 days since I've only candled eggs once before under a broody buff (some of them were developing at first but that ended badly too). My second batch has been incubating for 3 days and I just candled again to find absolutely nothing. I really wanted to perpetuate this flock and I'm very frustrated. Any ideas?