Update on my ongoing vibrations:

I installed the new guibo/flex disc , and while I fell less vibrations, the issue continues. I also tried shimming the center bearing mount up and down. This changed the speed and intensity at which the vibrations occurred but didn't stop them. Also tried matching the angle of the transmission and the front part of my 2 peice driveshaft.

Something I noticed while shimming the carrier bearing:

Right at the center bearing, the driveshaft is very hot. The first u joint and second piece of the driveshaft is not hot. The first piece of the drive shaft is hot near the center bearing but not hot where it attaches to the guibo.

I also just started to hear a scratchy whine from under the car, I believe it's the center bearing. Also while putting in the guibo the carrier for the center bearing seemed pretty soft and floppy.

I just installed the new FAG center bearing and Febi center bearing carrier less than two years ago.

Y'all think the center bearing and carrier are the problem with my car vibrating?

Thanks again for all the help everyone.