Hello, I don’t know if I’ll be able to explain this one correctly…
I want to lock the suspensions on the Y axis, to avoid getting the landing gears (following image) sticking out everywhere…
(result) 
The problem is I really don’t know how to do it, I’ve tried so far AlignPositions, but it doesn’t seem to make the intended result.
I have tried googling it, but without much result.
Help would be appreciated ! 