Transmission not centered

I've had the driveshaft for about a year. I've always had a vibration since I bought it used even with the 2 piece shaft. I'm trying to figure out the vibes before I remove the CB mount. maybe the engine was installed crooked when the frame was changed or one of the mounts has failed?

 

It's probably out of balance, have you checked it for phasing, maybe take it to a DS shop for a balance, that's usually cheap./