Thank you everyone for your input. I got everything ripped apart completely, and then put back together today, and no more vibrations! Such a great feeling!

This time, I took my time. Last time, I was excited to have gotten that far on my own, I got a little carried away and rushed.

There are some possible issues I noticed that may have caused caused the vibrations. I think I put the number 2 drive housing insulator on backwards last time, rotated it 180 degrees to the correct position this time. Also, not sure if the engine side of the shaft went completely back snug where it was supposed to last time, made sure this time though. I also noticed some extra rubber on the metal 12mm sleeves, not showing bare metal, so I scraped it off, and think things may have lined up better from that, not so sure though, as I would guess the rubber would compress with the tightening of the nuts and bolts, but who knows. Also removed the rust from the contact points on the shaft and on the engine and aux. housing area.

Those are just some ideas, it could have also been something else, seeing as though I redid the whole job, so who knows.

Again, much appreciation to you guys for the insights, could not have done it without you.