Hi and sorry folks, the same old but slightly different questions...

I've noticed that my air suspension compressor is running on too long. So:

No sagging, so its all airtight.
Goes up and down quite quickly on command.
But when it reaches the normal height the compressor runs on for about two minutes, then cuts out.
Same if lowering from raised height, lowers fine then compressor starts and runs for a minute or two having reached set height.

So I'm guessing all the air bags are holding as is the pipework, otherwise it would sag and lose height.
Compressor seems fine as it raises at a good rate.

No warnings or errors. Any thoughts ??