Thanks Bert and sorry for not much of an explanation here. There are several other threads with more detail and I didn’t want to keep going on and on and boring people.
Yes the parabolic stops adds benefits but most notably comfort. The rising stiffness at the end of the stroke does stop the suspension crashing abruptly. Pretty much all other suspension systems that I know of have this function in some form. It’s a shame it was left out on the these cars but once added the combination of soft(ish) leaf springs and live axle works quite well for me.
