I swapped out my thrust arms, and put in new Lemfoerder arms with 750 bushings. This time, I did everything by the book, replaced all hardware, torqued everything exactly.......and now I have a shimmy between 40 and 55 mph. I took it in for an alignment, and it came out exactly the same. I took it back this morning, and the shop said that they'd check out the wheel balance again.

Now, I've had thrust arm induced shimmy before, and I don't remember it starting out lower than 50mph, and mine starts to get noticeable at 40. Does this seem to be more of a balance issue than a worn suspension part? Any opinions or ideas would be much obliged!

Thanks,
Allan