Kampa Air 390 and replacement air bladder

marchhare

The main support of our Kampa 390 air awning containing the blow up valve was leaking and I reported it to Kampa thinking that they would send me a new blow up valve. There is no puncture, I think that it is leaking from the blow up valve. What they have
sent is a complete air bladder for the support tube, with connections to the isolating valves on the cross pieces. However there are no instructions on how to fit it. I have looked on the internet and found how to replace one of the exit valves but not how
to insert this complete bladder. Anyone on here ever undertaken this task. If you have could you let me know how you did it. Thanks.