My experience is that the torque is factory set at maximum, 30lbs. It's a pain to check too as the door edge fires a reopen every time you get your gauge near it.
My experiment was to slow high speed down to get less torque, but then door close time was affected and a nudge buzzer would turn on near full close which generated reduced speed and ROA call backs. Reverted to original parameters.
Maybe Green Pants will chime in to tell us what the answer may be.