Being a fairly recent convert to 2wd, I did a motor change this evening from a 19T spec to a 12T modified (yes I am still a brushed dinosaur) and was AMAZED at the effect of the different drag brake in the motors.
The 12T is a V-brush and has very little drag brake, I barely noticed the difference in a 4wd car, but in the B4 it just didn't steer at all and over-ran every corner. Had to run 50% drag brake and a softer front spring to get a similar steering feel. Big surprise.
So what level of drag brake are you running. Do you let the car coast a long way, or do you set it to come to a standstill at the apex and skip the tail out when you lift off?