Thanks for the advice and I'll take that route when its needed. This is the 4th day that the symptom has been absent. No shuddering at idle or chattering in the clutch. I don't know what the problem was, but its gone. My wife prayed it would go away since we don't have the funds to get it fixed, so I'll have to go with that reason for it's disappearance.

Even after I left the dealership, I was curious as to why the shuddering wasn't present in the same manner every time I drove it. I'm going to get both rear axle flanges changed out along with the seals and oil.
Where can I buy synthetic fluids for engine, gearbox, transfer case and diffs? Being new to the country makes things even more difficult. I looked at AutoZone in Tzaneen, but didn't see much of a selection. Also, does anyone know if K&N filters are available here?
I really appreciate the warm welcome and all of the advice.
jeff