I've lost a few rounds of eggs here recently and I'm about ready to go crazy. I have the typical wafer thermostat system and have had great hatches. Earlier this spring I cooked about 100 + eggs and got so sick I hung up the hatching for a while. I bought some new wafers and planned to change out each year to avoid the heart ache.... well, everyone started laying again so I fired the bator back up after I cleaned it well and replaced the wafer with the new one. It worked great for about 17 days then... I'm devastated again but, ready to figure out what's going on. I'm ready to buy the whole system including new thermostat AND wafer but, I have a couple of questions. #1 Is there a mechanism that you can install in the incubator that would prevent this from ever happening again? like an automatic cut off that would kick in as a last resort BEFORE my temps reach 130 degrees? #2 Is there a test to perform on a wafer to check whether it's bad? ...And Any help would be greatly appreciated... Thanks, Majorly PO'd in MD.