I have a 9CH and not sure about the plane version but should be the same.

Any way. I have my D/R set at about 50-60% and the exp at -40%, but it boils down to what feels good to you and is comfortable. I like it soft around the center of the stick so I don't over compensate.

As far as turning them on and off you should be able to assign them to whatever switch you want. At the bottom of the D/R EXP screen there is a SW with a letter beside it. That is the switch it is assigned to but you can change it.

I have all mine assigned to switch A down is on up is off.

It should be pretty well explained in the manual but if you have any more questions let me know.

See ya,