Just curious, do you change calibration that often? I pretty much set it once per bird, then leave it.
I'll occasionally tinker with them on and off depending on how my gunnery has been lately and at what distances I am tending to fire at.
I'll also mess with them when Im in a plane I am unfamiliar with or dont regularly fly to find where the sweet spot is for me. And for me each plane is set differently.
I'll also occasionally experiment with different settings on different types of guns
I've also had them mysteriously reset on their own
The 109F for example I usually have set anywhere between 3-400 and noticed something weird about my round trajectory only to go into the hangar and see them reset to 250. where I never have them set
The whole convergence thing isnt a huge issue for me. But I do find it aggravating when I do mess with it.
And If I can find it aggravating. I know some of the newer players must as well.
Like I said its not a huge issue. But I think one that could stand to be addressed