Digifants all suffer this to an extent.
I was fortunate to have an AmD remap on mine back in the day & it cured it.
A check of front/gearbox mounts for excessive play is worth it as drivetrain shunt will obviously exaggerate the problem.
Is it always on light throttle on/off? The airflow meter tracks can also wear giving a dead spot that can manifest itself as a jerk/hesitation on/off throttle...