You can also fly offline, climb to an alt ya like, but be sure to head due N, then in the radio buffer type .target 450 if that is your convergence, then u can watch what your guns are doing and adjust your site accordingly in MSPaint or whatever you have, such as photoshop or Paint Shop pro etc. there you can adjust your pipper up or down or left or right etc, then go back to the offline and ck your adjustments.
Also try adjusting your pitch performance in setup joystick, give it a more log type of curve and maybe adj your damping a bit if your nose is bouncing around a lot from joystick input.