Just back to caravanning after two years with motorhome ,last week bought Swift Charisma 535 and a porch awning called Oxygen something.Of course at home started to erect it when rain storm hit us. What with the rain and the pump not doing what it should was getting very frustrated. any way finally got it up only to find that when I removed pump the thing deflated, this happened several times until I pulled the valve outwards.Hope next time we do not have same problem. Any one got/had one?.