Did you try it without deadband in the cockpit? Especially using the view I suggested in the Me 262. It should be noticable obviously in most aircraft, but some more than others. One problem I found is that it's not easy to hit the dead center position of a stick on my G940 in particular, when trying to do the cockpit testing (since there were no squares to guide me and it has 'slop'). Putting in some curves from outside of IL-2 made it much easier though.
The control impact is small. It's most easily seen when flying time accelerated.
If you did it all then, move along
