It's not an uncommon problem. Long crankshafts had it years ago. that's why V engines are "better" than straight. A straight 12 cylinder engine was really long, a BIG spring.
More bearing help, but as all springs have a natural frequency and harmonics, even short shaft can run into problems.
My name is Richard. I was a Contouraholic.
NOW: '02 Mazda B3000 Dual Sport, Black
BEFORE: '99 Contour SE Sport
Duratec ATX Spruce Green
PIAA 510's, Foglight MOD, K&N Drop-in
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