Vibration noise near driveshaft

[Bud420x20]

I have a vibration noise when turning at slow speeds. Seems to be coming from driveshaft/hub area so I'm thinking worn splines on shaft/ hub since I just replaced the u-joints, gimble bearing and checked alignment. If I continue to use the boat will it damage anything that doesn't already need to be replaced? Any input is appreciated.

 

[Bt Doctur]

Alpha or Bravo type

 

[Bud420x20]

Ez shift

 

[Bud420x20]

Here's the whole story. 1966 V164 original 1a ez shift outdrive. I had the u joints done by my boat guy. Replaced the gimble bearing and used an alignment tool. The tool slid right in with a finger or two. The noise was still present even at idle. I slowly adjusted the motor mount up and checked for noise. It seemed to dissipate as the engine was raised. I turned the nut up two full rotations and could no longer hear the noise when turning at idle. Took it for a ride and found there is no noise turning left but it sounds even worse turning right. Please give me some input.

 

[Bt Doctur]

Remove the drive and correct the engine alignment first, then recheck all your work