Mine is a 1957 235, and yeah... the center of the balancer does actually look a bit off.
Is it possible someone tried to get the balancer off without a puller and caused that? I know that in my ignorance when I was first trying to remove my balancer, I ended up cutting deep inserts into the side of mine on accident, just like that. I ended up getting a new one. If the cuts looks to be caused by a chisel or something like that, and it worries you, you might want to consider a new one. I got mine for fairly cheap.
