it is most likely just noise, semi metallic pads and metal rotors make noise, once they warm up to operating temperature it tends to go away as brake silencers and silencer grease warms up and goes where it needs to be. Having enough "measurements" of the brake parts doesn't mean everything is perfect. You could have a stuck caliper, or something else going on that wouldn't show up right away..

The pull could be the tires, if it was pulling to the left, and you put the left tires on the right side, it makes sense it could put to the right, if the issue is tire wear..