I understand what you're saying. A few of my "high-end" carbons wobble to. Even though they state that they are good within +/-.001". BUT, I dont think it's as much the arrow as it is the field point or the broadhead. Only a few tenths of a thousandths (thats .0001" for you mathmaticians) out of whack in the tip will cause the whole arrow to wobble.
(This is assuming that you are spin testing point down on a hard surface, instead of using a spin tester with roller bearings)

Just my thought. You very rarely hear broadhead or point manufacturers advertise about the "straightness" of their product!