I got an 83 300sd that pulls slightly and noticed the inside tread is wearing on both front tires? Is there any information or advice for a DIY front end ball joint replacement? I took it in for a front alignment and they quoted over $1000! (more than the car was!) The parts were 2 ball joints,a tie rod end,and an idler arm repair kit ($150) So, was hoping to find info./help? Can't find any info. in my manuals,or this site? Help please!