Throttle Hold Curve Help

[strachg]

Hi FOlks, i just got my 9xr and im setting up my helicopter. I need a throttle hold curve for autos but the standard 9xr heli template doesnt have it. I have searched around but the info seems quite sparse. This is what i have done so far.

This mix on channel 11 after ID0, ID1 and ID2

+100%
THR
noTrim
Curve(C7)
Switch(THR)

It does kind of work but the curve is way different from a standard curve. Any help would be appreciated. Oh and im just waiting on my usb programmer and im going to put either er9x or opentx on my radio, is one of these firmwares better for helicopters than the other.

thank you

Graham