Front End Vibrating

['70GMCStep]

Got a question for you all.

Just installed a new front spring on the '65. (I should have put new springs on the front when I redid the front with new control arms, discs etc). I had it aligned but after it was aligned I stepped on it, and then around 50, it started in. I have had this guy align my stuff many times, and he does great work.

The tire is fine, no bent wheel or weights out of place. Am I looking at new ball joints? These new control arms from CCP were put on last summer, and the truck only has about 300 miles after the front end rebuild I did. The ball joints came installed in the kit.

What do you all think I should do? I'm at a loss here.

Thanks,
'GMCStep