Shimmy and Shakin\' Maybe someone out here has ran across this problem. What I have is a 79 /forums/images/graemlins/k5.gif with a 350 and NP203 case. I just spent $1800 on some recent problems but unfornately that seem to fix my problem. I had the Ball joints replaced because the front end shimmed <font color="red">REAL BAD</font> at around 35-55 mph. They did a steering alignment, rotated the tires and balanced them. Once I got it back it still pulled to the right a bit and still seemed to shimmy at higher speeds. Well there was a Pinion seal leak that they couldn't fix, so I took it to my other machanic. He has done a lot of work for me before so I feel that I can trust him. Anyhow, He agreed there was a pinion seal leak but also noted to me that the Passenger wheel seal was leaking too. I agreeded because there was puddle on the ground at home. That means the entire rearend comes apart to replace those. While it was apart, he found that the inner axle on the passenger side was bad. He said the the splines were at a point instead of square /forums/images/graemlins/confused.gif. I had him replace that too. Then they found that the passenger side wheel hub was bad. He said the clearance for the wheel bearing race was not a press fit, but rather there was a 1/16" to 1/8" gap and the race was sliding inside the hub. So he replaced th hub too. Now after having it back for about 1 week to 2. It still shimmy and shakin when I drive it. In fact it feel worse than before!! /forums/images/graemlins/confused.gif I took it back to the first shop the other day and got it back tonight. They said they can't figure out why /forums/images/graemlins/confused.gif and the steering alignment is as good as it will get. They have re balanced the tires 3 times plus rotated them to there best possible position and still it shakes when i drive it. So I sit here tonight typing this out to all of you hoping this will jog someones mind and say "Oh yes I have had this problem you need to..." /forums/images/graemlins/1zhelp.gif One thing I have checked already are the drive shafts and they seem fine. Any help is <font color="blue">GREATLY</font> appreciated!! /forums/images/graemlins/thumb.gif Sorry for being so long! Best Regards, Scott Any other suggestions?