Air suspension

I'm sure thsi subject has arissen amny times so bare with be on this.
Over the last few months the time to raise the car to driving height is taking longer and longer but is also variable.
Some days is goes up as it should others it can take a good few minutes.
I have also notice she seems to settle lower on the off side rear.

Any suggestions as to cause, rectification or where to find info would be appreciated.

could be bags or more likely internals of the pump. you can get re seal kits for the pump for around 40 quid iirc, the bags, spray em with soapy water, if bubbles appear replace em

you pretty much answered you own question, the air leak ison the offside rear if thats the side thats sagging and dragging the rest down with it. the suspension shouldnt sink over night, if its kept as it sould be it should sit there for weeks without sinking. i left mine sat for 3 weeks while i was on holiday and it was still up when i got back.

Thanks for advice, soapy water then seal kit sounds like to way to go.