That is one gorgeous plane you've created! I don't mean that in a condescending or patronizing way. I mean it totally rocks! We've got to figure out why it won't fly and get that six-blade in the air!
I've only flown the Mini Scout with the A-pack and a 6x3. My first one never really flew, but it took an extremely hard hit two seconds into it's very first flight. My second Mini Scout flies wonderfully. It's not twitchy at all and I've had no stalling issues with it. It definitely likes to be nose heavy, though. I hope you can get the video up, so we can try to figure out what's going on.
She's pretty beat up now, but I've got mine glued back together and ready to go. I've got batteries charged and I'm off work tomorrow (well, today. It's pretty late.) Weather permitting, I'll be putting her back in the air in several hours!