Our 07 Legacy 2.0R (130 000 km) has some hard gear changes when going from 2. to 3. gear.

It feels like a 16 year old trying to shift a manual for the first time.

the drivetrain.
The car had a big service about a year ago, and the gearbox oil was changed.
I have been told that it might help with a reset of the TCM parameters.
Has anyone had this problem, or know anything about it?

Its the 4 speed auto gearbox btw.

Regards
Fredrik