Question Frame Animation, positioning issue.

Hey.! I use Photoshop for frame by frame animation for unity.
My issue is - When my animation is done, all frames are aligned and centred in the canvas.
when i export frame to files into unity, the animation plays fine, however the animation moves instead of staying centred. ie - as the animation is playing he moves backwards even though each frame he is staying still.
any ideas.?

-Update it seems to be making the scale of the player bigger as the animation grows in size making him move backward...