I have a 03 700 prox it has dyno port twins vforce 3 reeds slp flow rites 719 team helix 64 gram weights yellow primary spring and im geared down 1 tooth on the top.it also has a 1.25 track.what do i need to change when going to a 136x1.25 or 1.5

I stuck a 43 bottom gear on mine and very happy with it with a 144" track.