General handicaps for the triple series have four components. SSANZ racing excluding RNI,RNZ from the prior three seasons, RaceTrack, design assessment and for races 2 and 3, earlier racing from the current series. Manual consideration is also a factor but as stated is the starting point with,approximately equal weighting to each component. That isn't always possible as it's dependent on there being previous racing.
It can be argued, quite reasonably. that race 1 this season should not have had handicaps changed afterwards, or changed minimally though my cynical side tends towards the