By upside down you mean at the small end or the bottom of the big end? I am assuming you mean the small end. I had one last hatch do that and it got out on it's own ok.
Part 2 started with a slight hitch, Here is my work around copied from the DIY thread.
Here is one I just smashed together. My DIY incubator was holding about 68% humidity (just went into lock down tonight) I would like it a little higher. I added a warm wet sponge, but it will dry out. I don't want to open it again until they hatch, so I improvised this 'remote humidity increaserer (patent pending)
I didn't need extra sponges in testing, but seems now, right when I need it I do!
Plastic air tube, slit with a new screw in the end.

Wire ties and a sponge. Filled from a new sauce squirter. (I use the squirter to fill my 'bator trays through a gap)

If I still need a bit more I can stack the sponges and soak them all at the same time, hopefully one should see the couple of % I need though.
Part 2 started with a slight hitch, Here is my work around copied from the DIY thread.
Here is one I just smashed together. My DIY incubator was holding about 68% humidity (just went into lock down tonight) I would like it a little higher. I added a warm wet sponge, but it will dry out. I don't want to open it again until they hatch, so I improvised this 'remote humidity increaserer (patent pending)
I didn't need extra sponges in testing, but seems now, right when I need it I do!
Plastic air tube, slit with a new screw in the end.
Wire ties and a sponge. Filled from a new sauce squirter. (I use the squirter to fill my 'bator trays through a gap)
If I still need a bit more I can stack the sponges and soak them all at the same time, hopefully one should see the couple of % I need though.