Scott
The most brake I can get on the non Contr De Ja Vu is 30% and even then I have to be gentle in throttle up after a down line brake event. [ I use no brake on Contr Drive De Ja VU] I suggest you put your throttle trim on the left slider and change your "step number to a lower number. Also you want approx. 30% travel. I use this as double arming mech. as I always turn everything on with the slider in the full up position so no matter where the throttle stick is put it will not arm the speed controller untill you pull the slider all the way down! [Last thing I do before taxing out!] Make sure the slider is down and no prop rotation at idle in order to have the brake engaged. If you have a maneuver where you don't want brake one ratchet click up on throttle stick will give you a rotating prop idle. Check this on the ground and adjust throttle AFR if necessary.
Dick