Originally Posted by m_beeson
I use subtrims to center the stick in assistant.
If you then change the subtrims again after you have successfully centered them in the assistant, then you will undo what you have achieved.
So your first instinct was right.
I've not had to use trim or sub-trim on either my DX7 or my ER9x, simply calibration in Naza Assistant has nailed it everytime. One thing I have noticed on the ER9x, adding Expo will affect centering. I found this out while adding 75% expo to the throttle to soften the center and make the green area wider. This worked well, but I didn't like the way it flew so I put 50% throttle on the T switch instead and got rid of the expo. So, I would suggest no expo, no dual rate, no trim and no sub trim before calibration then see what happens