The last time I replaced the seal I found one PVC plumbing fitting in my plumbing junk box fit over the crank end and helped to center the seal.
I did exactly the same thing when installing the timing cover.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.