I remember encountering something similar in the Lamborghini Sian kit - I think around one of the diffs; I left the axle a bit loose just in case, and that was

I remember encountering something similar in the Lamborghini Sian kit - I think around one of the diffs; I left the axle a bit loose just in case, and that was good, because of course I mounted the diff the other way around and had to take it apart.