Driveshaft vibrations

[jbcollier]

In my search for vibration causes, I seem to have made more.  I bought all new half shafts and had their balance checked at a driveshaft shop.  All good.  Drove 6K and vibrations slowly increased during the trip as well as a curious high frequency growling/rattle sort of sound.  Got home and the new inner yokes were loose on the output shafts (I have a twin link system).  Swapped in the old inner yokes and all is back to normal again.  Yet another thing to watch for!

[SwiftDB4]

I've thought of replacing my inner yokes just because of their age, but after hearing your experience I'll keep my old ones (twin link also).