65 Valiant Ball and Trunnion Question

Hi all,

I've been having a persistent vibration around 40mph from my Valiant, while I was spinning the car up on the hoist, it sounded like a lot of vibration was coming from the Ball & Trunnion area.

I was able to slightly rotate the trunnion (1/8th inch slop?) while holding the driveshaft in place. Is this normal? I'm thinking that could be contributing to the vibration I am feeling.

Let me know what you guys think.

Thanks for your time