Dan, there is a big possibility you may have installed the spindle/king pin spacers backwards, or upside down, also big chance you may have accidentally installed your caster pills wrong, giving the chassis too much positive caster, or your steering shaft installed wrong at the inner tie rod ends, from the wrong setting holes.
It is very important to double check how it used to be before
I hope you snipped your camber and tow?
Otherwise you may have a bent chassis, I would send it to a table for adjustments and to make sure it’s straight, but check all that other stuff I mentioned first. Any chance you can post pictures?