Steve F
I did what you suggested and got Lang Differentials to fix the front diff. He basically rebuilt the whole insides as the teeth were worn etc etc. Not sure what the individual parts comprise of but I'm happy with the result and his service.
In hindsight I should have got him to put it different gears to run bigger tyres. Currently they are 3.73. For future reference, what ratio would you suggest I should go to if I want to run 32" tyres? What actually gets changed? and can it it been done at home?
Thanks