From the factory that is true but B&M makes flexplates to replace the original and they (the B&M plate) lets you use any neutral balance converter. That's what he says he has and Tony is right the magnum plate is different than a LA plate cause their imbalance is a different amount. Since B&M no longer sells the magnum plate he would have to use the old method of adding weight on the converter like you said to get it balanced.