If in doubt- REBIND :)

[alex]

I only say it as I keep forgetting and it solves lots of electronics and gyro issues. I fitted a new ESC, but the gyro was causing trouble since I changed my servos (GP780)

I thought the new ESC may solve it, but no...........

Then a blinding flash struck me and I rebound and all was great.

Moral of the story- rebind after any electrics changes