Well, I thought the mechanicals were done, but we found an issue we thought was fixed, but wasn't. I assumed the vibration I was feeling at highway speeds was from the tires, but after 3 rounds with the balancer, I found it in the driveshaft...something that was supposedly taken care of when the transmission was installed. I was told they balanced it, but they added a few weights with clamps instead of doing it right. So, I dropped the shaft and took it to a local shop to be rebuilt. Everything from the front of the tube to the back of the shaft was replaced and rebuilt.

I can now be driven at highway speed without vibration or shimmy. If I could chase down the front end float and make it better than stock, I'd be happy. It seems all of these F series bricks have a bit of float while driving. I've had my front end rebuild checked by three professionals, and they all three agree that it was done right, so it's not in the work I did. I'll eventually get this sorted out, but I think it will always have the float, no matter what I do to it. I plan on taking it to an off-road shop next week to have them take a look at it in case we're missing something on it.

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1987 560SL
85,000 miles