SMA

This is as narrow as you can get on the 417x, so has a lot of grip.

Yet to try this but think it will address some of the issues with running the team setups in low grip. Should roll less at the front and have more on power grip, but still good steering.

Also yet to try this, it is a basic setup with the addition of anti-squat which Jilles recommended for better on-power grip in his thread.

Source: The TC Hub