What should I mod out of the box? I am thinking just the steering (servo saver) bushings, upgrade to ball bearings. I had a Savage 4.6 last year, but sold it. The X, I have heard, is quite a bit better. This is the new X, has the aluminum diff housings and steel spur gear and hardened clutch bell. I was thinking of getting the reverse module, any thoughts on this? Not worried about weight, but complexity and such. I am a pretty experienced r/c'er, just haven't posted in a long while on here!