@
moojpg2 remember that the further from the Center of Gravity you put the weight along the "arm" the higher impact it has. That amount of weight will significantly move the CG towards the back.
Think of a see-saw/teeter-totter and how you can adjust the fulcrum so that a 40lb kid and a 250lb Dad can use it together. Same idea.
In small planes the battery is often moved into the tail to offset the entire weight of the engine.
Moving the weight forward will definitely help, but it will still have an impact both front to back and top to bottom.