ball joint

I just changed front brake pads and rotors today and I noticed the passenger side tie rod ball joint is leaking grease. Here are some pics. I have been hearing mysterious rattling noise from that side at speed over 40 miles per hour and mechanics told me to replace brake pads, rotors and struts...

My car pulls to left even after two wheel alignment from Goodyear. I had 3-year warranty, but they couldn't fix my car, so they gave me money back. I came across Hyundai techinfo website and found out that if vehicle pulls to one side, possible causes are: 1. Galling of drive shaft ball joint...