Yes, I definitely know what you mean. I am always worried about that as well. I usually just lift the lid with one hand and stick an egg in with the other but that is very nerve wracking. Thankfully I’ve never accidentally smashed any but I’ve came close. One time I was holding the lid in one hand and an egg in the other hand and the back of the lid slipped, moved foreword, and the turner tipped up. An egg came a couple of inches from being smushed. I just try to be very careful now.
The lid in my opinion is also not a good design for when taking out ducklings because when I have quite a few in there and I have to take the lid all the way off then I’m trying to round up all ducklings. Since it is just me, I have a terrible time trying to round them up fast enough before one jumps out of the bator. I actually have had a few jump out before, and since my incubator is on a high counter top they have came very close to falling off.
I’ve learned to work around those things by:
1. lifting the lid straight off and setting it behind the incubator when I remove it
2. Putting a barrier around the incubator when I remove ducklings so they don’t jump to their death
3. If I have an egg near the edge I make sure to put my hand near that edge to catch it if it rolls.