OK, so from what I can tell, the general consensus is for me to buy a centre diff and add enough weight to the left side of my chassis, just to the left of the centre line until I can get it balanced left-to-right.

What about adding weight up front? I've read that this truck is almost 40-60 front to rear, where other trucks are closer to 50-50. Wouldn't adding weight up front, just to the left of centre, benefit me more?