Shaking 360 LA

Hey,
I need some guidance on what could cause my 360 to shake pretty decent at idle. Its the same in gear or park and sort of new ish. The engine always had a little shake but not like that.

Two things, I am running efi and have tried to adjust the idle to the most stable solid vacuum and such but the motor has a pretty strong consistent shake. It does not appear like its dropping a cylinder or misfires, I can tell because the efi works like a saw tooth pattern at idle. I have the AFR set...

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Author: Knebel