The reason the 1202 has 2 wafer thermostats is because the back wafer is the high temperature kill switch. You should set the back wafer at 102°F to prevent overcooking the eggs in case the operating wafer fails.
You really don't want to remove the front wafer unless you are replacing it with either a digital PID controller or an electronic controller. The front wafer is the one you set at the operating temperature of 99.5°F for the forced air incubator that you have.
Here is the manual for the 1202 incubator.
Thanks, I printed that out last night. I only removed the front wafer to set the back one. It's now set to hold at 102 so I'm getting ready to add the front one back in. After I pick my kids up from the bus stop, I'm going to start cutting into some egg trays to get them in. I have 36 turkey eggs and 19 BCM eggs on the counter just itching to be incubated lol. Not to mention to other 35 eggs in the other incubator.I'll probably put them all in.
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