Bring up your clip board go to joystick and adj your pitch slider for a log type curve, maybe up you damping a bit also.
Then flying offline climb to 5k or so 2k whatever fly due N, type
.target 400 or whatever you use for convergence.
Let your plane get to max speed then get as close to the bullseye center as ya can and let the target have it with your fav plane and watch where ur rounds go
you can adj the sight pipper with paint shop, photoshop, paint shop pro etc up/dwn left /right until you get your rounds to land where ya want. using this you will quickly see how much your j-stick input is bouncin the nose around, if it still is then its bk to the pitch setup adj the slider curve or give it more damping until your comfortable with it, but ( always a but ) dont go hog wild with the damping cause it will cause ur elevator to move more slowly across the entire pitch curve.