I was informed by a more "tenured" (using that term loosely) lifter today that my dead lift form is off. I was told to concentrate on driving my heels into the ground while keeping my butt down and back straight. Apparently I was creeping up onto my toes during my lift. I thought he had a good point until he stepped in to show me and looked like a first timer; I honestly thought I was going to have to call an ambulance! But anyway, I'm just not getting the pump I remember getting from them when I was in high school. Thoughts?