Sorry grumpy but for some reason when replying to your post it jumps straight back to the top after the text goes below the scroll bars and I can't see what I am typing.

It seemed to have plenty of oil and there was very little discolouring.

The neighbour is not sure but does say that his is not as fast as his work one (same model & a year older)the oil filter was dirty but no metal particles in it & there were only a few fine metal shavings on the drain magnet.

I can't see any teeth missing or stripped splines, the hubdrive keys & keyways are fine.
I am assuming that the axles are meant to be independant in that you can turn one side clockwise & the other anti clockwise and are not both meant to only turn either back or forward together as a pair??

Sorry grumby but I am still having problems when typing, I can't see the text as I type as it scrolls back toward the top of the box.

Rich