I guess my steering box is bad

[Oregon 1967 GMC]

Got my front end together and took it to Les Schwab Tire Center and was told my Steering Box is too tight, needs to be replaced. I haven't even put 100 miles on it and it's herky jerky and stiff. On the freeway it feels like it starts to pull one way or the other and I have to really stay on top of driving because it doesn't seem to return, if you know what I mean. But I guess the alignment is good.

lifetime warranty so do you think I should send it back and get another? Just confirming unless someone knows something I don't. I guess they don't adjust them anymore.