Vibration 1950 Streamliner

[Mikei16]

I have a 1950 streamliner 6 cylinder standard transmission, the left rear motor mount was bad so, I replace all 3 mounts figuring it was the right thing to do.  Now I have a vibration that I never had before.  I added some rubber under the rear mounts its better but you can feel it in the steering column and turn signal switch handle.  Any clues 

Thanks 
Mike