could be a number of things. most likely you're shifting forward over your feet as you dip - get all the way back on your heels and keep your chest back as you dip and drive - only the knees bend, torso doesn't lean at all. you may also, or instead, be over-reaching with the back foot - that will pull your hips out from under the bar and create the effect of having the bar too far forward even if it didn't actually travel forward. think of getting the back foot down the floor right away, and pick up and reach the front foot forward, pushing your hips in under the bar.
|