cosmichooves

I've recently replaced ball joints, inner and outer tie rods, cv boots, shocks, and a wheel bearing. Then I noticed dark grease under the power steering pump, and realized I was going to have to replace the rack and pinion bellows. Now I'm getting peculiar noises though, a higher pitched whining or whistling and a scraping sound. What am I likely hearing, it wasn't there before the bellow replacement.