OK, let's answer your question with more questions. Not being rude, I am unclear. If I were not at work, I would post pics.
Sitting on the bike looking forward, the G2 should have the cam/cable attachment hidden inside the throttle cable housing. There should be a space of 1/4? of an inch or so then there should be a thin ring or lip which will be the stop for the grip. This prevents the grip from rubbing against the cable housing. At the extreme right end of the G2 did you remove the end cap? This is not used on the FJR, it pops right off with only an O-ring to hold it in place. After that is gone, there should be about 1/2 inch or so of the handlebar sticking out of the right (outside) end of the G2. The grip will cover all of that.
The bike is outside in the parking lot now, if you need I can go out and take a cell phone pic of the finished install but I doubt that will help you.