This is the first time with this incubator. Converted commercial cooler, but yes I am going to do something different with the setup next year. It doesn't need much sealing, more like better heat setup and seal off the last couple holes from the refrigeration parts. I think I'll also go back to less sealed containers. Was more work last year but perfect hatch rate. Definitely not giving up, but it has been rough. So thanks for the encouragement.