I have bought a newly constructed home built this year. I noticed today that there are many hairline,vertical cracks in the brick. I would estimate about 25 + bricks have these cracks. They seem to be around the corners of the house. Most involve a single brick, but in two areas it involves 2-3 bricks vertically. My interior doors rub in areas,but I think the installer was sloppy. The house has a crawlspace design. Is this normal or exceptable?