Diving during rolling

[HSC]

Hello !
I have tuned my gt5 on pretty high level soo far.....
The only thing wich left to set is this.
Doesn't mater if I go continious forward or back rolls the heli goes down big time ( forward nose diving, back tail diving).
Soo... I must make pretty bigg corections manualy, wich is pretty anoying if you have fast roll rate and small heli......
Strange is the side tictocs are perfect....
Any sugestion wich parameter need too set for this isue sorted out ?
Heli is perfectly balanced and swash is set with leveler.
Any sugestion welcomed....
Regards

[NitroAl]

Sounds like the gyro is either crooked or the location you have it mounted is not square to the main shaft!