I've read the thread and I don't see RTV sealant mentioned - If you have to remove the diff cover (to get to the clips for the earlier axles) then you'll need to clean the mating surfaces and re-seal.
As for the retaining washers that hold the axles into the hub - the FSM says you need to put in NEW ones. When I first read this I thought yeah right... but then I measured the rear camber with and without the axles fitted: There was a difference of about 1 degree. So if you imagine that your axle retaining washers (also come with many other names) are cupped and not straight then you may get some camber related wear issues on your tyres.
If you want have a look at my experience of the sub frame bushing removal
http://www.peachparts.com/shopforum/showthread.php?t=276507