trans upgrade e maxx

The only thing I could find @ novak was for the spur and pinion gears. I have changed that to what they recomended. Im just wondering since the hv maxx ripped both new diffs out, once I change them over to maximizers will it then start to tear up the trans. Ive been told the trans is pretty strong, but I think Ill still get the idler gears from mike just to be safe, exspecialy since we are running these huge swamp kong tires lol.