I own a 2006 WK 3.7. I recently had the upper and lower ball joints replaced by a shop that does almost all of my work. Now I hear some nasty noises when I pull into a parking lot or the front end shifts. I had the shop check it out and they said everything is fine. It's hard for me to beleive that the parts with 90k miles didn't make noises, but the new parts do make noises. I'm thinking about replacing the sway bar bushings. Any ideas?

Also, anyone else experience an occasional rough idol when stopped?