Cool! I have brass portal covers and steering knuckles on my Gen8 also and it definitely helps!
The wheel weights I have also help. Not sure if you already have those.
Nice choice! I have the first version but wish I had the V2 as it doesn't have the belly bump and has stronger axles and portal gears. I ordered the upgraded gears and axles for mine and they should be here in a week or so.
I've added Pro-Line hyrax tires, weighted wheels and brass portal...