Guys - Thanks for the advice.
Looks like the Detrot is out.
I'll try to come up with the money on the LSD now to save having to pull the whole diff assembly out for rebuilding at a later date.
My wallet's got a permanent crease due to opening up for the ute anyway

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Sooty_grunter - I'm not too far away.... Graceville.
Keen to catch up & compare notes..... You have a PM.