Im swapping engine parts from my old 3.8 to a rebuilt long block. First question arose when I removed the crank bolt. Behind the flat steel washer was a rubber washer. Does it belong there? Its a bit chewed up so where could I find a replacement? I also expected the balancer to slide off easily like on a 455. Wont budge. Does this need heat, a hammer or a special tool to remove? These are the first in what will probably be a long list of questions