I just tried, but the key config. doesn't allow you to chose L2, R2, L3, R3. It only allow you change to (L, R, X, Y, B, none). The default setting is L and R (equal to L1 and R1), can't assign the key buttons other than that. And also, I think the stick shift is not belongs to any L1, L2, L3, R1, R2, R3 etc, just like the Break pedal and Gas padel, it is individual.