Why is so difficult to make the central gear steering?

I think I will give up

My animation works perfectly as the xml code

BUT the SIMVAR Gear Steer Angle is always zero !

I have played with contact points, compression factors, center of gravity, MOI, etc. but nothing changes

Moreover this part of the aircraft editor is really cumbersome (you need always to save and resync trying to guess the effect of the different parameters)

At the end to overcome the issue I used the simvar RUDDER DEFLECTION PCT to drive the animation