Do you use a two step with the transbrake?
When I footbraked I never used a 2 step, but I did with the transbrake.
In my setup it was not all that differnt in the timeslip between the 2, but I could "tune" my reaction time by futzing with the 2 step RPM. I am not sure how everyone else approaches this, but I think there are probaly a few different ways to arrive at some consistency.