So 10 minutes ago, I am torquing the head on my 4BT that I just finished putting back together. I'm on the final stage of torquing with the +90 degrees section. On the final bolt, it makes a loud snapping noise. So I take just that bolt out to try and save the gasket and use the inspection camera on the threads in the head. It looks like one individual thread might have stripped but I cant tell for sure as it might just be some thread sealer. Anyone have this happen or know the cause/fix?