Cheers. The diff has already been welded though.
On another note, I've heard of another idea that drag racers do, similar to welding. But instead of welding the gears, they pour molten aluminum in it to fill it completely. Then the gears also don't get heat stressed. Has anyone heard of this happening? I would be tempted to look into it if I experience issues with my welded diff, but enjoyed the feeling of it.