If it kills you, you can't practice it to learn it and your sensei can't demonstrate it to you to teach you how to do it. Do you just have to learn the principles and pray it was right come time to find out? Or do you just automatically get the ability to open it when you learn to open the 7th? I know we can't know so what's your opinions? How does one actually go about learning how to open the 8th Gate before needing to open it?