Please refer back to post #10 in this discussion thread.
Have you inspected the U-joints on the Gen2?
Inspect and eliminate the easy fixes first. Work to the more complex repairs as a last path. Many times, the fix is simple and not terribly difficult. Although, the longer you let a problem persist, the worse the problem becomes.
Think of these things as analogous to a roof leak. Sure, it only leaks when it rains. But eventually, damage will increase to include shingles, delamination of roof decking, rotted truss, rotted rafters, wet insulation, mold, drywall replacement, mold, ............ Simpler to fix the leak when discovered. $100 fix early or $1000 fix later.
The internet and forums can offer help in the form of suggestions or possible solutions, but it all comes down to the owner to make the final assessment. We (forum) can not put hands on your truck. YOU must be assertive in finding the problem and a solution.