Hi
I forgot to ask in my last post about the diff oil, is the copper washer on the diff bung the same size as the engine oil sump bung
Thanks again
Richard

LR001949 is the part number if that helps

You can reuse copper washers if they are not too damaged.

Smooth both sides by rubbing on fine emery/sand paper then anneal (softens the copper previously work hardened during the squeeze) by heating to cherry red and allowing to cool. Cooling by dropping into water prevents some of the black discolouration, but its of no real consequence.

Good demo of effects of annealing  Jules