rilot said:2g won't throw off the balance. It's the difference between having an SD card in the camera or not.
That makes me a happy man.... My FO-OSD lens ring is only 2g so it might be fine on a Zenmuse with an H3 (just the panning is the issue).

I wonder what the weight difference is of the new higher capacity batter then. You'd think it must be heavier (and hence potentially cause issue with a Zenmuse, Hero3 (not Hero3+), and the new batt inside it?