Zlin142 for the nose gear, try changing your contact points locations. There
is an article about it in the Docs. This partially was a fix for me. I had
other issues that involved the gear being hydraulic as opposed to anything
else and took a lot more finding what all contributes to the gears,
specifically the nose gear with steering. Here are two important links for
gear animations:
https://docs.flightsimulator.com/html/mergedProjects/How_To_Make_An_Aircraft/Contents/Modelling/Airframe/Animations/Animating_Landing_Gear.htm?rhhlterm=nose%20gear&rhsearch;=nose%20gear
https://docs.flightsimulator.com/html/mergedProjects/How_To_Make_An_Aircraft/Contents/Files/Flight_Model/Wheels_And_Contact_Points.htm?rhhlterm=gear%20contact%20points&rhsearch;=gear%20contact%20points
Thank you so much! Readjusting nose gear contact point was the solution! 
Now I encountered another problem: the nose gear steering doesn’t want to do
his job. When I start to taxiing, the nose gear also start to turning randomly
left and right no matter the direction of the moving of the aircraft. I first
suspected too little weight on nose gear, but after I checked at ‘Debug
Aircraft Wheel’ menu, and I found more than 100kg on it, I consider this is
sufficient, so the problem is somewhere else, but where? 
Hello again, i come back for this GEARS templates and NAMES/Anim_lengths
parameters : Because i first wanted to copy F18’s parameters, i saw that there
was an issue when calling gear template with another anim’s name, i had to
shorten length to 50 (for a 400 frames anim in Blender) to work. c1 50
Without changing names, if i specify anim length to 200= the same frames
number as in blender, the animation stops at the middle in MSFS. I need to SET
anim length = 100 for a 200 frames anim in Blender. So, 2 frames in Blender =
Value 1 length anim in MSFS 100
So, 2 frames in Blender = Value 1 length anim in MSFS NO, because 400 frames =
50 anim length.
I don t understand Maths.
This logic is really hard for my mind, sorry… Length=200, animation stops at
half. Length = 200/2=100 → anim fully correct
400 frames → length=50 200 → 100 I suppose for 800 frames or 600 ??, length
=25… For 100 frames, i m wondering…
It s finally simple, 200 frames = length 100. each time, we multiply frames,
we must divide by same coeff the anim’s length.
2 frames by time unit.
double buffering ??
https://youtu.be/b2FOiNCQd9g Just for the eyes.