Howard,
You have come up with a good solution to an expensive problem for us early AWD owners. I have posted your fix on V70R.com and the responses are positive. Only one has stated that the fix will only put off the inevitable replacement of the shaft, which is quite expensive. An other has done what you have done and it is still working after quite a few miles.
You are correct with your assumptions about the CV grease collecting in all of the wrong places at speed, so that when you go slowly the shaft shudders. The shudders go away after a few minutes of sitting still, because of the grease moving to other parts of the shaft.
I am NOT going to replace the drive shaft in my AWD car, it is too expensive and will only show up again after 100K miles or less. I will squirt a little CV lube into the joints to see if the slow speed shudder goes away, I like cheap fixes!!! :)

Thank you,

Klaus
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The 164 has a new home, all I am left with are a 95 854T and a 98 V70R :)