Along with greasing the driveshaft, do you recommend just going through and verifying the tightness of all bolts under the VX? Reason I ask:

When I bought my first (silver '99) VX, it had a missing transmission mount bolt (according to Carmax, who found and fixed the problem). This was the first thought I had when I started trying to diagnose the problem... but with the baby, and working from home, I really haven't been driving much lately and it's become a back-burner issue.