Hello folks, I bought a '63 Riviera about 6 weeks ago. Nice complete car, but it hasn't been on the road for 20 years. It took some doing, but I carefully got the car started and running briefly. Once running, the crank pulley and the balancer were as loose as could be, clanking around down there to beat the band. So, with almost no effort, I loosened the crank bolt and took the balancer off. It was damaged. The nose of the crank looks fine, no damage. The records with my car indicate that the balancer has been replaced twice, which is somewhat puzzling. I got a replacement balancer from James Kehr in PA, but other Buick guys have expressed concern that the replacement unit might not be right for my '63 Riv. Any thoughts?