Yes that's normal. :music_whistling: Besides all the trim and tail wheel talk, as I stated, you need to anticipate the a/c lurching to the left and counter with appropriate opposite rudder, not "very light pressure".
I watched your trk again and paid close attention to your rudder inputs and yes you did not apply enough counter rudder as it lurched left.
Good practice is just to start on runway, run her up, don't touch the stick! & just keep her straight on the runway. When shes ready to fly u'll know.
Point being concentrate on ur pedals, once you got that.... trim/tail wheel blah.. Don't matter so much :)