I dont know if this makes a difference, but it does to me....i notice your feet are not in line with the bar...also, it seems as if you are standing to far from the bar when you lift, it appears as if the bar is being pulled in to you and as you raise up, it swings forward.....i make sure i put my shins next to the bar to keep the straight...and i try to almost drag the bar up the shin as i raise....i have found if my feet are not parellel with the bar, my lift dont get all the way up...
E