Throttle on auto mod?

I am using mission planner as ground station when I set the mods as

1- stabli
2- auto
3- RTL

I get a problem that when I takeoff in stab mod after that i want to change the mode to AUTO , this can’t be done when the Throttle is more than 50% .

I need to decrease the Throttle to less than 50% then change the mode to Auto .

can you help me in the way to solve this problem.

thanx in advance.

ahmed [/b]

i have same problem . in rtl and auto mode throttle cut to zaro . i use arduplane v3.8 beta on pixhawk.