This car is from a dealer who sold it originally. It has 23K on it.
I wonder why dealers don't check the balancer when a car is in for service. It seems like something they all should be doing.
It's not the cost of replacing the balancer that I'm worried about but I don't want to have the thing come apart while I'm on vacation or while my wife is driving it.
Anyway, thanks to everyone for the Info.
Now if only this car had some other color than white