I got my Fantom 2S 40C 5000 last week and took the time to give ample wire clearance and file the sharp edges down so I didn't cut the leads on the battery or the balance tap. Its a shame all this battery talk is saying I made a bad choice for my 17.5/RS combo. I'll test it physically this week back to back with my old 25C Team checkpoint battery.
I did switch back to the plastic tray on both cars and put the layshaft in my son's car this weekend for weight and ease of gear selection. Except for a few scratches and a different body (R9-R on his, DNA1 on mine) the cars will be nearly identical so we can run 17.5 together. I haven't wrecked what the car came with, so that's what I'm running for bodies.
He had eyes a big as pie plates when he saw the car.
I think he would have driven it around the basement until the pack died if I let him. I just hope he doesn't kick me all over the track with it!