Scania APS Dryer Rebuild

Hi Guys,
My Nextgen G series is having issues with air pressure it jumps between 1 and 65bar on all 3 tanks, been told that its been a common problem in Australia anyway.
They sold me a kit 2958113, has anyone installed one? any suggestions? apparently you can do it with the dryer in place.
Cheers,
Nick

Had a problem with mine stopped building air completely, Called Scania lifeline out (Swindon) Fitter said any dryer completely knackeredā€¦Called my dealer who said probably vent valve on the bottom of the dryer (Plastic Large nut)They dropped it out fitted new all has been good since about Ā£34 for the valve. I believe its easy to get to on your model but a bit job on a low bumper model.

65 bar?!
Is the kit a new sensor by any chance?