First air suspension issue

[gninnam]

oticed over the last few days that after the suspension failure, that the offside rear seemed a lot lower than all the others.
After if failed today and putting it on the drive I got the tape measure out.
Apart from the offside rear, from the floor to the centre of the arch measured 73 cm.
The other one measured 70 cm.
After turning the engine on and selecting high three of them went to 75 cm while the offside only to 73.
It did eventually raise to 75 cm.

Will keep an eye on it as my drive aint level but it could be a leak or something.
Cheers