3gx upgrade

In getting my DX8 radio ready for the 380, I rearranged the model list in the model memory to make room for the 380. Unfortunately I forgot that the receiver is matched to the model number in the radio, and since I moved the 450 to a new model number, I'd have to rebind it. 

V4.0 of the 3gx firmware has a problem binding in DSMX mode. After numerous attempts I was finally able to bind the receiver, but in the older DSM2 mode.  A quick check of Align's 3gx website revealed a newer version of the firmware, v5.0!  Hopefully this version doesn't have an issue binding in DSMX mode. 

Updating to v5.0 should also mean I'd need to redo the head setup, but when I check the settings display, nothing seems to have changed. I think I'll repeat it anyway just to make sure.

At least after the update to v5.0 I was able to bind my radio in DSMX mode on the first try!  Whew!

This time I'd like to optimize the head/tail precomp and gains.  To optimize the head gains I'll need to hover, turning up the elevator gain until the heli wobbles, then back it down. Then repeat this for the alerion gain. To optimize the tail gain I will need to perform a fast piro, then stop, turning up the gain each time until the tail wags, then back it down.

To optimize the precomp, I need perform a pitch pump. For the head, the precomp should be turned up if the heli drops the nose or tail during the manuever. For the tail, if it kicks right. 

I'd also like to get the CG right, as it tends to wander while doing a piro, and I'd like it to stay in one spot.