Last night I was doing TGU's (without the down) and I maxed out at 70 pounds for my right arm and 65 pounds for my left arm. When I tried 70 on my left arm I couldn't get my body up to my elbow. In other words, I failed the first movment of the exercise. In general this is the toughest part of the exercise for me. Do you experience the same thing when you do this exercise? How should I focus on doing this first movement? Should I being doing a modified sit-up? Should I lean the weight and use it to roll me up? Thank you in advance for any responses.