SVT10,
The SVT is very different than any other manual car I've driven. It's been the hardest for me to learn how to drive smoothly. I've never done exactly what you say, but my wife has and one other person too. I believe the light flywheel is the cause of this bucking. I haven't tried nor do I care to figure out the exact method of repeating the bucking. But a little variation in clutch take-up should eliminate it.
Aaron