The noise my rear end was making turned out to be the axles: apparently some moisture found its way into the axle shaft and caused some premature wear on the axles. Unitrax, my local gear gurus installed some axle saver bearings because they could not locate a set of replacement axles for the SVO.
The tech told me the only downside to these bearings is that they sometimes start to leak after a year or so. He also told me if I located a set, he would install the new axles for free.
I did a few searches and found that Moser makes the replacement axles. Anyone installed a set of these lately? The threads were a few years old.