Drifting when Braking

So after an educational experience of removing and replacing the cylinder head on my daughter's 2004 Aveo it is now having a braking problem. At speeds above approximately 20-25MPH the car pulls to the right but it feels more like a drift than a pull. I have rebuilt both of the calipers, brake hoses and bled the system. I am at a loss on where to go next. Any help would be appreciated. Thanks.

Have you looked at or bled the rears?

Hey! I have a problem with my Chevy Venture. When I step on the brake, it's like there's an air and wouldn't stop abruptly. My place is quite far from the city. I can't go out of the house, I might lose my brake. - Lady driver