[strat61caster]

1. Same chassis, same theories apply, likely end up in slightly different places but starting points are good.

2. Front end is too soft, lots of body roll reduces grip via camber loss and uneven weight transfer, reduce front roll + balance stiffness across the car = improved grip
Also better transient response in slaloms/offsets/etc. You can play with rear toe and tire pressures to get desired amounts of rotation. Yes in Street class trim it will still be pushy in steady state, the only way to get around that would be to remove grip in the rear (stiffer rear bar, shock settings, tire pressures) which makes you slower overall then the stiffer front bar.