gauravag

Hello everyone,
I am flying my Javelin 90 airplane and while practising knife edge, notice, that the when i roll to the left, i need to give a less amount of right rudder, but when i roll to the right, i need a lot more left rudder.
On the ground, i measured that the deflections are the same, no expo tuned in . The control linkage has no slop , in fact when doing the left rudder, the rudder is pulled towards the servo, so no chance of the slop in the pushrod.
In straight flight the rudder is also neutral.. Servo is hi torque Futaba digital S3050.

Thanks for sharing your views.
Gaurav