Ok, so actually it seems I really do not have much of a linear throttle. The motors dont seem to increase in RPM very much from low stick. The THR_MAX is 900, MID 380, MIN 100, TRIM_THR 200. I also have the MOT_SPIN_ARMED set at a value of 1 but the motors do not spin upon arming.
I noticed within the ESC Calibration field there is a section related to setting MAX, MIN, LOW throttle values but the boxes to do this do not light up and wont let me into those fields to change the values. How do I set the throttle settings to run from low to higher RPM?