Good. I asked this because I was having same problem with my car too (2JZ engine) and after little struggle I found the RPMs were high. When they set to normal, the jerk became very very normal.
Now, as you said the Jerk was heavy earlier but after 2 days its very less. So I think it has already become normal or will be in couple of days.
If not, then can discuss again.
Did you change the gear oil ?
if yes, then which gear oil you used?