Thanks again Trent.
I understand the principle now. I found that the shims are no longer listed as available from Toyota.
I will probably be able to either cut some or machine some. Although, machining something 2.8 mm thick presents some challenges. As for cutting some thin ones to add to the existing 2.5 mm ones? Well, I don't know. Any thoughts about this?
I have to replace the rear main oil seal in this Camry one day soon. The front seals have now been done, so that is all the remains to be replaced. So, when I do that, I will tackle this differential pre-load problem then. In the meantime, I can figure out wether to machine some shims or cut some.
One remaining question. I have only worked on one side. It stands to reason that the other side will at least need checking too. Does that make sense?
Jim.