Very vague steering...

So after driving my new truck a few hundred miles I'm wondering if it's just me, or if something needs to be checked. The steering is so light and vague feeling it's ridiculous. It's almost like it has no castor in the front end at all. There's just no "feeling". It drives OK, but you have to be VERY attentive or it will wonder over the center line or toward the ditch. I have to constantly concentrate and correct it to keep it between the lines. It doesn't "pull" to one side or the other...it just doesn't want to stay straight. Not sure how else to explain it. Does this sound normal, or should I have it checked out?

 

Complain to the dealer and see if they'll throw it on the alignment rack. New doesn't mean aligned, so I'd check that first and make sure that's all well and good and proceed thusly.