So I did take off the shaft and man, it's pretty nasty looking. All rusted out and one of the u-joints has bearings that are shot and no grease in it at all. I looked at my records of when I first got Jr and took it to my wife's mechanic and he did the used car inspection report. It did indeed say that the ujoints were completely rusted and out of grease. So the Isuzu VX tech confirmed the same thing. I'm gonna shoot some grease in it temporarily and see if that helps the issue a bit since there's a zirk fitting on the U-joints. Will check with Merlin to see how much he sells a new drive shaft for.