No problem! Appreciate the advice. It's not so much that my grip fails, as it is SHIFTS to my fingers, which, in addition to making dropping the bar more possible than if I had a firm whole-hand grip, seems to really refocus the stress of the exercise to my forearms. I'll try squeezing tighter -- it's just hard to keep so many things in mind, which you have to do to do deads correctly. At least my form is good (no back pain, etc.).