/3/ - 3DCG

Hey so im trying to follow a tutorial of grant abbitts for making a low polygon character to rig. He had a gross of way making mirrored limbs where you flip it using some negative coordinate and something about it just felt dirty somehow, so Im using the mirror modifier to make my joints.

That being out of the way-- I have these two hands here. I made them using the mirror modifier, and applied the modifier, and then set each of their rigins to their own geometry. So the little orange dot or whatever is inside each hand. Here is where my problem is. How can I scale these together at the same time, a uniform amount? the hands are too thin, but if i scale them one at a time they wont be equal.

scaling them together does something weird where they move outwards from eachother away from the center between them despite being two objects with their own origin. Is there something i m not understanding? this is really pissing me off.