Larry,
You'll want more preheat. In my manual control mode for the HT, I charge between 325-400°F Environment Temp, depending on the bean and intended profile.
I'll do a little digging, I know some folks have put a PID on the heater element--I cannot recall whether they use ET or BT for the control.
From the HT profiling work I've seen, focus points have been--drying time (bright yellow beans by 300 °F), ramp to 1st crack, and post 1st crack. Lots of discussion on the ET (or Max ET) difference with BT as these ramps evolve--thought being keep the differential minimized while keeping good timing on the progression of the roast.
Then you can add the thought of a "pause" in the ramp to 1st to maximize the time from 350-370°F as BW recommends and performs with his Turbocrazy. You may want to do more experimenting with BT vs. ET as the control input.