Cracked 360 Magnum Flexplate

I dont know if the weight on the PP balancer is used in addition to the flex plate weights, seems alot of weighs in different places to balance a motor. I know the convertible PP balancer had 2 weights, a 360 LA and a 360 mag. would any of those be enough with a neutral flexplate? That one thing I hate about a 360, the balance issue.