My eggs have been coming out great now that I don't overcook them.
Yes; my egg cooker came with a pin on one end, and you’re supposed to pierce the large end on the pin, and then put the egg in pierced-side up.
The electric egg cooker works very well, but I’ve also had success with bringing pierced eggs to a boil in a pan of water, taking them off the heat, and letting them sit for 10 minutes.
-JT
I use a pushpin to poke a hole in the blunt end. It keeps them from cracking and leaking. It works for me.