Through patience and persistence, finally got myself an Openpilot CC3D board
to replace the cobbled together KK board + FY30A stabilizer. That combo
actually worked pretty well, but the CC3D board is in a league of its own.

It's allowed me to really explore the limits of this beater airframe.

One thing I added was another anti-vibe mount for the controller itself. Using thin
ply, and 4 earplug halves, with notches in their sides to reduce the amount of foam
for the lighter weight board. It helps me cut some vibes the board was seeing.
Had to tape the servo wires down so they wouldn't blow in the wind, and yank the
board around. May put a plastic cover over the whole area too.

Couple vids showing what it's capable of, and I'm still just getting comfortable with it.

FPV - OpenPilot CC3D first session (3 min 22 sec)

FPV - Tricopter Flips and Rolls (4 min 18 sec)

Tearing it up at night.

FPV - Fast fun at night - Hero3 Black - Protune (4 min 41 sec)

Pushing it hard (double backflip, quadruple roll)

FPV - Pushing it (3 min 54 sec)

Loowwww and fast.

Flat out (4 min 42 sec)

flying smoooth! I can not get my cc to fly that smooth. What are you KP KI settings? Are you flying in AT or Rate mode?

That video was awesome!

Impressive that you got the KK and FY30 to work together!

Videos are looking great!

Is there any benefit of those round arms?
Looks like you needed two plates for everything that's mounted on it including motors and VTx.
That could add some weight.

If you look at my earlier blog entries you'll see the rationale for round arms and clamped
together frame. Everything moves in a crash, instead of breaking.