Let's start simple, did you have the truck aligned yet?
Did you use a Torque Wrench and tighten everything to spec's?
The wheel won't 'free spin' like a trailer's wheel, there is still the resistance of the front driveline, new hub bearings, etc.
When you say 'not spin and catch', are you saying that the wheel will spin and abruptly stop, or that it just slows down real fast?