No pics of rear but I'll have a look in the morning when it's light.
The l322 is a bit more complicated than the P38, someone posted a schematic diagram some time ago but I can't find it.I only know the P38 but sounds like you have leaky airbags or lines to the back bags
Well done Pete.It's all in the later RAVE docs pages 230-258. Here's the diagram & legend.
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