Not that the stud is out, measure the depth of the hole. My stripped terminal was tapped less than 4mm deep.Even if using a thread locker the stud can be pulled out. Here is a photo of one of mine that pulled up with the aluminum threads included. That is red loctite you see on the stud. I didn't use a primer but so far all of the other studs are ok. The aluminum is so soft it's really easy to strip. I am not entirely sure why this stud pulled up but I do recall some studs had more wiggle room than others while screwing them in. I have since bought a beam style torque wrench.
I’ll be checking the depth of all tapped terminals of new cells from now on (before I secure a grubscrew with Loctite Red).