Differential question

[damselfly]

I fully ballraced my Mad Rat this evening which involved opening the ball diff. Although i've inserted my diff gear back into the transmission housing, does it matter which way it's put back in? In other words, does it matter if I have my diff outdrive with the screw on the left hand wheel side or the Right hand side. Hope this makes sense.
By looking at the manual it was difficult to work out.
Thanks in advance.