1) setup your model as you wish.
2) Once that's done, save the model file to the SD card.
3) put the SD card in your PC/MAC and open it in any txt editor. (I used notepad) You will see all of the info is organized, but a little cryptic.
4) Scroll down until you see "Trim" (not Trim ID)
5) The throttle channel is "Index= 0"
6) Change the "Max Trim Clicks" to 1
7) Change the "Trim Step Size" to 255
8) save the file
9) put it back in your radio, and save it into the proper model